diff --git a/.gitignore b/.gitignore
index 8e5962e..2982cf1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,4 @@
+dist
+node_modules
+*.vsix
 out
-node_modules
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 7877e3f..c1314b6 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,10 +1,13 @@
 // Place your settings in this file to overwrite default and user settings.
 {
-    "files.exclude": {
-        "out": false // set this to true to hide the "out" folder with the compiled JS files
-    },
-    "search.exclude": {
-        "out": true // set this to false to include "out" folder in search results
-    },
-    "typescript.tsdk": "./node_modules/typescript/lib" // we want to use the TS server from our node_modules folder to control its version
-}
\ No newline at end of file
+  "files.exclude": {
+    "out": false // set this to true to hide the "out" folder with the compiled JS files
+  },
+  "search.exclude": {
+    "out": true // set this to false to include "out" folder in search results
+  },
+  "typescript.tsdk": "./node_modules/typescript/lib", // we want to use the TS server from our node_modules folder to control its version
+  "[typescript]": {
+    "editor.defaultFormatter": "vscode.typescript-language-features"
+  }
+}
diff --git a/package-lock.json b/package-lock.json
index 7d35007..70d4e7d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "html-css-class-completion",
-  "version": "1.18.0",
+  "version": "1.19.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -100,6 +100,7 @@
       "version": "0.1.1",
       "resolved": "https://registry.npmjs.org/ansi-cyan/-/ansi-cyan-0.1.1.tgz",
       "integrity": "sha1-U4rlKK+JgvKK4w2G8vF0VtJgmHM=",
+      "dev": true,
       "requires": {
         "ansi-wrap": "0.1.0"
       }
@@ -108,6 +109,7 @@
       "version": "0.1.1",
       "resolved": "https://registry.npmjs.org/ansi-red/-/ansi-red-0.1.1.tgz",
       "integrity": "sha1-jGOPnRCAgAo1PJwoyKgcpHBdlGw=",
+      "dev": true,
       "requires": {
         "ansi-wrap": "0.1.0"
       }
@@ -127,12 +129,24 @@
     "ansi-wrap": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/ansi-wrap/-/ansi-wrap-0.1.0.tgz",
-      "integrity": "sha1-qCJQ3bABXponyoLoLqYDu/pF768="
+      "integrity": "sha1-qCJQ3bABXponyoLoLqYDu/pF768=",
+      "dev": true
+    },
+    "anymatch": {
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-1.3.2.tgz",
+      "integrity": "sha512-0XNayC8lTHQ2OI8aljNCN3sSx6hsr/1+rlcDAotXJR7C1oZZHCNsfpbKwMjRA3Uqb5tF1Rae2oloTr4xpq+WjA==",
+      "dev": true,
+      "requires": {
+        "micromatch": "^2.1.5",
+        "normalize-path": "^2.0.0"
+      }
     },
     "append-buffer": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/append-buffer/-/append-buffer-1.0.2.tgz",
       "integrity": "sha1-2CIM9GYIFSXv6lBhTz3mUU36WPE=",
+      "dev": true,
       "requires": {
         "buffer-equal": "^1.0.0"
       }
@@ -150,6 +164,7 @@
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-1.1.0.tgz",
       "integrity": "sha1-aHwydYFjWI/vfeezb6vklesaOZo=",
+      "dev": true,
       "requires": {
         "arr-flatten": "^1.0.1",
         "array-slice": "^0.2.3"
@@ -158,27 +173,50 @@
     "arr-flatten": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/arr-flatten/-/arr-flatten-1.1.0.tgz",
-      "integrity": "sha512-L3hKV5R/p5o81R7O02IGnwpDmkp6E982XhtbuwSe3O4qOtMMMtodicASA1Cny2U+aCXcNpml+m4dPsvsJ3jatg=="
+      "integrity": "sha512-L3hKV5R/p5o81R7O02IGnwpDmkp6E982XhtbuwSe3O4qOtMMMtodicASA1Cny2U+aCXcNpml+m4dPsvsJ3jatg==",
+      "dev": true
     },
     "arr-union": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/arr-union/-/arr-union-2.1.0.tgz",
-      "integrity": "sha1-IPnqtexw9cfSFbEHexw5Fh0pLH0="
+      "integrity": "sha1-IPnqtexw9cfSFbEHexw5Fh0pLH0=",
+      "dev": true
     },
     "array-differ": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/array-differ/-/array-differ-1.0.0.tgz",
-      "integrity": "sha1-7/UuN1gknTO+QCuLuOVkuytdQDE="
+      "integrity": "sha1-7/UuN1gknTO+QCuLuOVkuytdQDE=",
+      "dev": true
+    },
+    "array-filter": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/array-filter/-/array-filter-0.0.1.tgz",
+      "integrity": "sha1-fajPLiZijtcygDWB/SH2fKzS7uw=",
+      "dev": true
+    },
+    "array-map": {
+      "version": "0.0.0",
+      "resolved": "https://registry.npmjs.org/array-map/-/array-map-0.0.0.tgz",
+      "integrity": "sha1-iKK6tz0c97zVwbEYoAP2b2ZfpmI=",
+      "dev": true
+    },
+    "array-reduce": {
+      "version": "0.0.0",
+      "resolved": "https://registry.npmjs.org/array-reduce/-/array-reduce-0.0.0.tgz",
+      "integrity": "sha1-FziZ0//Rx9k4PkR5Ul2+J4yrXys=",
+      "dev": true
     },
     "array-slice": {
       "version": "0.2.3",
       "resolved": "https://registry.npmjs.org/array-slice/-/array-slice-0.2.3.tgz",
-      "integrity": "sha1-3Tz7gO15c6dRF82sabC5nshhhvU="
+      "integrity": "sha1-3Tz7gO15c6dRF82sabC5nshhhvU=",
+      "dev": true
     },
     "array-union": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/array-union/-/array-union-1.0.2.tgz",
       "integrity": "sha1-mjRBDk9OPaI96jdb5b5w8kd47Dk=",
+      "dev": true,
       "requires": {
         "array-uniq": "^1.0.1"
       }
@@ -186,12 +224,20 @@
     "array-uniq": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/array-uniq/-/array-uniq-1.0.3.tgz",
-      "integrity": "sha1-r2rId6Jcx/dOBYiUdThY39sk/bY="
+      "integrity": "sha1-r2rId6Jcx/dOBYiUdThY39sk/bY=",
+      "dev": true
+    },
+    "array-unique": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.2.1.tgz",
+      "integrity": "sha1-odl8yvy8JiXMcPrc6zalDFiwGlM=",
+      "dev": true
     },
     "arrify": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/arrify/-/arrify-1.0.1.tgz",
-      "integrity": "sha1-iYUI2iIm84DfkEcoRWhJwVAaSw0="
+      "integrity": "sha1-iYUI2iIm84DfkEcoRWhJwVAaSw0=",
+      "dev": true
     },
     "asn1": {
       "version": "0.2.4",
@@ -206,6 +252,18 @@
       "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
     },
+    "assign-symbols": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/assign-symbols/-/assign-symbols-1.0.0.tgz",
+      "integrity": "sha1-WWZ/QfrdTyDMvCu5a41Pf3jsA2c=",
+      "dev": true
+    },
+    "async-each": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/async-each/-/async-each-1.0.3.tgz",
+      "integrity": "sha512-z/WhQ5FPySLdvREByI2vZiTWwCnF0moMJ1hK9YQwDTHKh6I7/uSckMetoRGb5UBZPC1z0jlw+n/XCgjeH7y1AQ==",
+      "dev": true
+    },
     "asynckit": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
@@ -214,7 +272,8 @@
     "atob": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/atob/-/atob-2.1.2.tgz",
-      "integrity": "sha512-Wm6ukoaOGJi/73p/cl2GvLjTI5JM1k/O14isD73YML8StrH/7/lRFgmg8nICZgD3bZZvjwCGxtMOD3wWNAu8cg=="
+      "integrity": "sha512-Wm6ukoaOGJi/73p/cl2GvLjTI5JM1k/O14isD73YML8StrH/7/lRFgmg8nICZgD3bZZvjwCGxtMOD3wWNAu8cg==",
+      "dev": true
     },
     "aws-sign2": {
       "version": "0.7.0",
@@ -226,6 +285,18 @@
       "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.8.0.tgz",
       "integrity": "sha512-ReZxvNHIOv88FlT7rxcXIIC0fPt4KZqZbOlivyWtXLt8ESx84zd3kMC6iK5jVeS2qt+g7ftS7ye4fi06X5rtRQ=="
     },
+    "azure-devops-node-api": {
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/azure-devops-node-api/-/azure-devops-node-api-7.2.0.tgz",
+      "integrity": "sha512-pMfGJ6gAQ7LRKTHgiRF+8iaUUeGAI0c8puLaqHLc7B8AR7W6GJLozK9RFeUHFjEGybC9/EB3r67WPd7e46zQ8w==",
+      "dev": true,
+      "requires": {
+        "os": "0.1.1",
+        "tunnel": "0.0.4",
+        "typed-rest-client": "1.2.0",
+        "underscore": "1.8.3"
+      }
+    },
     "babel-code-frame": {
       "version": "6.26.0",
       "resolved": "https://registry.npmjs.org/babel-code-frame/-/babel-code-frame-6.26.0.tgz",
@@ -237,10 +308,88 @@
         "js-tokens": "^3.0.2"
       }
     },
+    "babel-runtime": {
+      "version": "6.26.0",
+      "resolved": "https://registry.npmjs.org/babel-runtime/-/babel-runtime-6.26.0.tgz",
+      "integrity": "sha1-llxwWGaOgrVde/4E/yM3vItWR/4=",
+      "dev": true,
+      "requires": {
+        "core-js": "^2.4.0",
+        "regenerator-runtime": "^0.11.0"
+      }
+    },
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
+      "dev": true
+    },
+    "base": {
+      "version": "0.11.2",
+      "resolved": "https://registry.npmjs.org/base/-/base-0.11.2.tgz",
+      "integrity": "sha512-5T6P4xPgpp0YDFvSWwEZ4NoE3aM4QBQXDzmVbraCkFj8zHM+mba8SyqB5DbZWyR7mYHo6Y7BdQo3MoA4m0TeQg==",
+      "dev": true,
+      "requires": {
+        "cache-base": "^1.0.1",
+        "class-utils": "^0.3.5",
+        "component-emitter": "^1.2.1",
+        "define-property": "^1.0.0",
+        "isobject": "^3.0.1",
+        "mixin-deep": "^1.2.0",
+        "pascalcase": "^0.1.1"
+      },
+      "dependencies": {
+        "define-property": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/define-property/-/define-property-1.0.0.tgz",
+          "integrity": "sha1-dp66rz9KY6rTr56NMEybvnm/sOY=",
+          "dev": true,
+          "requires": {
+            "is-descriptor": "^1.0.0"
+          }
+        },
+        "is-accessor-descriptor": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-1.0.0.tgz",
+          "integrity": "sha512-m5hnHTkcVsPfqx3AKlyttIPb7J+XykHvJP2B9bZDjlhLIoEq4XoK64Vg7boZlVWYK6LUY94dYPEE7Lh0ZkZKcQ==",
+          "dev": true,
+          "requires": {
+            "kind-of": "^6.0.0"
+          }
+        },
+        "is-data-descriptor": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-1.0.0.tgz",
+          "integrity": "sha512-jbRXy1FmtAoCjQkVmIVYwuuqDFUbaOeDjmed1tOGPrsMhtJA4rD9tkgA0F1qJ3gRFRXcHYVkdeaP50Q5rE/jLQ==",
+          "dev": true,
+          "requires": {
+            "kind-of": "^6.0.0"
+          }
+        },
+        "is-descriptor": {
+          "version": "1.0.2",
+          "resolved": "https://registry.npmjs.org/is-descriptor/-/is-descriptor-1.0.2.tgz",
+          "integrity": "sha512-2eis5WqQGV7peooDyLmNEPUrps9+SXX5c9pL3xEB+4e9HnGuDa7mB7kHxHw4CbqS9k1T2hOH3miL8n8WtiYVtg==",
+          "dev": true,
+          "requires": {
+            "is-accessor-descriptor": "^1.0.0",
+            "is-data-descriptor": "^1.0.0",
+            "kind-of": "^6.0.2"
+          }
+        },
+        "isobject": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/isobject/-/isobject-3.0.1.tgz",
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
+          "dev": true
+        },
+        "kind-of": {
+          "version": "6.0.2",
+          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.2.tgz",
+          "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA==",
+          "dev": true
+        }
+      }
     },
     "bcrypt-pbkdf": {
       "version": "1.0.2",
@@ -250,10 +399,17 @@
         "tweetnacl": "^0.14.3"
       }
     },
+    "binary-extensions": {
+      "version": "1.13.1",
+      "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-1.13.1.tgz",
+      "integrity": "sha512-Un7MIEDdUC5gNpcGDV97op1Ywk748MpHcFTHoYs6qnj1Z3j7I53VG3nwZhKzoBZmbdRNnb6WRdFlwl7tSDuZGw==",
+      "dev": true
+    },
     "block-stream": {
       "version": "0.0.9",
       "resolved": "https://registry.npmjs.org/block-stream/-/block-stream-0.0.9.tgz",
       "integrity": "sha1-E+v+d4oDIFz+A3UUgeu0szAMEmo=",
+      "dev": true,
       "requires": {
         "inherits": "~2.0.0"
       }
@@ -263,29 +419,50 @@
       "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.5.1.tgz",
       "integrity": "sha512-MKiLiV+I1AA596t9w1sQJ8jkiSr5+ZKi0WKrYGUn6d1Fx+Ij4tIj+m2WMQSGczs5jZVxV339chE8iwk6F64wjA=="
     },
+    "boolbase": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/boolbase/-/boolbase-1.0.0.tgz",
+      "integrity": "sha1-aN/1++YMUes3cl6p4+0xDcwed24=",
+      "dev": true
+    },
     "brace-expansion": {
       "version": "1.1.8",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.8.tgz",
       "integrity": "sha1-wHshHHyVLsH479Uad+8NHTmQopI=",
+      "dev": true,
       "requires": {
         "balanced-match": "^1.0.0",
         "concat-map": "0.0.1"
       }
     },
+    "braces": {
+      "version": "1.8.5",
+      "resolved": "https://registry.npmjs.org/braces/-/braces-1.8.5.tgz",
+      "integrity": "sha1-uneWLhLf+WnWt2cR6RS3N4V79qc=",
+      "dev": true,
+      "requires": {
+        "expand-range": "^1.8.1",
+        "preserve": "^0.2.0",
+        "repeat-element": "^1.1.2"
+      }
+    },
     "browser-stdout": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/browser-stdout/-/browser-stdout-1.3.0.tgz",
-      "integrity": "sha1-81HTKWnTL6XXpVZxVCY9korjvR8="
+      "integrity": "sha1-81HTKWnTL6XXpVZxVCY9korjvR8=",
+      "dev": true
     },
     "buffer-crc32": {
       "version": "0.2.13",
       "resolved": "https://registry.npmjs.org/buffer-crc32/-/buffer-crc32-0.2.13.tgz",
-      "integrity": "sha1-DTM+PwDqxQqhRUq9MO+MKl2ackI="
+      "integrity": "sha1-DTM+PwDqxQqhRUq9MO+MKl2ackI=",
+      "dev": true
     },
     "buffer-equal": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/buffer-equal/-/buffer-equal-1.0.0.tgz",
-      "integrity": "sha1-WWFrSYME1Var1GaWayLu2j7KX74="
+      "integrity": "sha1-WWFrSYME1Var1GaWayLu2j7KX74=",
+      "dev": true
     },
     "builtin-modules": {
       "version": "1.1.1",
@@ -293,6 +470,31 @@
       "integrity": "sha1-Jw8HbFpywC9bZaR9+Uxf46J4iS8=",
       "dev": true
     },
+    "cache-base": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/cache-base/-/cache-base-1.0.1.tgz",
+      "integrity": "sha512-AKcdTnFSWATd5/GCPRxr2ChwIJ85CeyrEyjRHlKxQ56d4XJMGym0uAiKn0xbLOGOl3+yRpOTi484dVCEc5AUzQ==",
+      "dev": true,
+      "requires": {
+        "collection-visit": "^1.0.0",
+        "component-emitter": "^1.2.1",
+        "get-value": "^2.0.6",
+        "has-value": "^1.0.0",
+        "isobject": "^3.0.1",
+        "set-value": "^2.0.0",
+        "to-object-path": "^0.3.0",
+        "union-value": "^1.0.0",
+        "unset-value": "^1.0.0"
+      },
+      "dependencies": {
+        "isobject": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/isobject/-/isobject-3.0.1.tgz",
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
+          "dev": true
+        }
+      }
+    },
     "caseless": {
       "version": "0.12.0",
       "resolved": "https://registry.npmjs.org/caseless/-/caseless-0.12.0.tgz",
@@ -319,25 +521,133 @@
         }
       }
     },
+    "cheerio": {
+      "version": "1.0.0-rc.3",
+      "resolved": "https://registry.npmjs.org/cheerio/-/cheerio-1.0.0-rc.3.tgz",
+      "integrity": "sha512-0td5ijfUPuubwLUu0OBoe98gZj8C/AA+RW3v67GPlGOrvxWjZmBXiBCRU+I8VEiNyJzjth40POfHiz2RB3gImA==",
+      "dev": true,
+      "requires": {
+        "css-select": "~1.2.0",
+        "dom-serializer": "~0.1.1",
+        "entities": "~1.1.1",
+        "htmlparser2": "^3.9.1",
+        "lodash": "^4.15.0",
+        "parse5": "^3.0.1"
+      },
+      "dependencies": {
+        "dom-serializer": {
+          "version": "0.1.1",
+          "resolved": "https://registry.npmjs.org/dom-serializer/-/dom-serializer-0.1.1.tgz",
+          "integrity": "sha512-l0IU0pPzLWSHBcieZbpOKgkIn3ts3vAh7ZuFyXNwJxJXk/c4Gwj9xaTJwIDVQCXawWD0qb3IzMGH5rglQaO0XA==",
+          "dev": true,
+          "requires": {
+            "domelementtype": "^1.3.0",
+            "entities": "^1.1.1"
+          }
+        }
+      }
+    },
+    "chokidar": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-1.7.0.tgz",
+      "integrity": "sha1-eY5ol3gVHIB2tLNg5e3SjNortGg=",
+      "dev": true,
+      "requires": {
+        "anymatch": "^1.3.0",
+        "async-each": "^1.0.0",
+        "fsevents": "^1.0.0",
+        "glob-parent": "^2.0.0",
+        "inherits": "^2.0.1",
+        "is-binary-path": "^1.0.0",
+        "is-glob": "^2.0.0",
+        "path-is-absolute": "^1.0.0",
+        "readdirp": "^2.0.0"
+      },
+      "dependencies": {
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+      "resolved": "https://registry.npmjs.org/extglob/-/extglob-0.3.2.tgz",
+      "integrity": "sha1-Lhj/PS9JqydlzskCPwEdqo2DSaE=",
+      "dev": true,
+      "requires": {
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+          "integrity": "sha1-rEaBd8SUNAWgkvyPKXYMb/xiBsA=",
+          "dev": true
+        }
+      }
+    },
     "extsprintf": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.3.0.tgz",
@@ -616,23 +1100,65 @@
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       "integrity": "sha1-JcfInLH5B3+IkbvmHY85Dq4lbx4=",
+      "dev": true,
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         "pend": "~1.2.0"
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+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/filename-regex/-/filename-regex-2.0.1.tgz",
+      "integrity": "sha1-wcS5vuPglyXdsQa3XB4wH+LxiyY=",
+      "dev": true
+    },
+    "fill-range": {
+      "version": "2.2.4",
+      "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-2.2.4.tgz",
+      "integrity": "sha512-cnrcCbj01+j2gTG921VZPnHbjmdAf8oQV/iGeV2kZxGSyfYjjTyY79ErsK1WJWMpw6DaApEX72binqJE+/d+5Q==",
+      "dev": true,
+      "requires": {
+        "is-number": "^2.1.0",
+        "isobject": "^2.0.0",
+        "randomatic": "^3.0.0",
+        "repeat-element": "^1.1.2",
+        "repeat-string": "^1.5.2"
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+      "resolved": "https://registry.npmjs.org/find-index/-/find-index-0.1.1.tgz",
+      "integrity": "sha1-Z101iyyjiS15Whq0cjL4tuLg3eQ=",
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-      "integrity": "sha1-+8cfDEGt6zf5bFd60e1C2P2sypE="
+    "for-in": {
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+      "resolved": "https://registry.npmjs.org/for-in/-/for-in-1.0.2.tgz",
+      "integrity": "sha1-gQaNKVqBQuwKxybG4iAMMPttXoA=",
+      "dev": true
+    },
+    "for-own": {
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+      "resolved": "https://registry.npmjs.org/for-own/-/for-own-0.1.5.tgz",
+      "integrity": "sha1-UmXGgaTylNq78XyVCbZ2OqhFEM4=",
+      "dev": true,
+      "requires": {
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+      "integrity": "sha1-+8cfDEGt6zf5bFd60e1C2P2sypE="
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@@ -644,15 +1170,26 @@
         "mime-types": "^2.1.12"
       }
     },
+    "fragment-cache": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/fragment-cache/-/fragment-cache-0.2.1.tgz",
+      "integrity": "sha1-QpD60n8T6Jvn8zeZxrxaCr//DRk=",
+      "dev": true,
+      "requires": {
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       "resolved": "https://registry.npmjs.org/from/-/from-0.1.7.tgz",
-      "integrity": "sha1-g8YK/Fi5xWmXAH7Rp2izqzA6RP4="
+      "integrity": "sha1-g8YK/Fi5xWmXAH7Rp2izqzA6RP4=",
+      "dev": true
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       "integrity": "sha1-C3gV/DIBxqaeFNuYzgmMFpNSWes=",
+      "dev": true,
       "requires": {
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@@ -661,12 +1198,562 @@
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-      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8="
+      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
+      "dev": true
+    },
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+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-1.2.9.tgz",
+      "integrity": "sha512-oeyj2H3EjjonWcFjD5NvZNE9Rqe4UW+nQBU2HNeKw0koVLEFIhtyETyAakeAM3de7Z/SW5kcA+fZUait9EApnw==",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "nan": "^2.12.1",
+        "node-pre-gyp": "^0.12.0"
+      },
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+        "aproba": {
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+          "dev": true,
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+          "dev": true,
+          "optional": true,
+          "requires": {
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+          "bundled": true,
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+          "version": "3.0.3",
+          "bundled": true,
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     "fstream": {
-      "version": "1.0.11",
-      "resolved": "https://registry.npmjs.org/fstream/-/fstream-1.0.11.tgz",
-      "integrity": "sha1-XB+x8RdHcRTwYyoOtLcbPLD9MXE=",
+      "version": "1.0.12",
+      "resolved": "https://registry.npmjs.org/fstream/-/fstream-1.0.12.tgz",
+      "integrity": "sha512-WvJ193OHa0GHPEL+AycEJgxvBEwyfRkN1vhjca23OaPVMCaLCXTd5qAu82AjTcgP1UJmytkOKb63Ypde7raDIg==",
+      "dev": true,
       "requires": {
         "graceful-fs": "^4.1.2",
         "inherits": "~2.0.0",
@@ -677,7 +1764,14 @@
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+      "integrity": "sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==",
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       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
-      "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68="
+      "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68=",
+      "dev": true
     },
     "yauzl": {
       "version": "2.10.0",
       "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.10.0.tgz",
       "integrity": "sha1-x+sXyT4RLLEIb6bY5R+wZnt5pfk=",
+      "dev": true,
       "requires": {
         "buffer-crc32": "~0.2.3",
         "fd-slicer": "~1.1.0"
@@ -2080,6 +4936,7 @@
       "version": "2.5.1",
       "resolved": "https://registry.npmjs.org/yazl/-/yazl-2.5.1.tgz",
       "integrity": "sha512-phENi2PLiHnHb6QBVot+dJnaAZ0xosj7p3fWl+znIjBDlnMI2PsZCJZ306BPTFOaHf5qdDEI8x5qFrSOBN5vrw==",
+      "dev": true,
       "requires": {
         "buffer-crc32": "~0.2.3"
       }
diff --git a/package.json b/package.json
index 4a3c4fa..ec1af5e 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "html-css-class-completion",
   "displayName": "IntelliSense for CSS class names in HTML",
   "description": "CSS class name completion for the HTML class attribute based on the definitions found in your workspace.",
-  "version": "1.18.0",
+  "version": "1.19.0",
   "publisher": "Zignd",
   "engines": {
     "vscode": "^1.19.0"
@@ -30,7 +30,7 @@
     ],
     "configuration": [
       {
-        "title": "CSS Class Completion",
+        "title": "IntelliSense for CSS class names in HTML",
         "properties": {
           "html-css-class-completion.includeGlobPattern": {
             "type": "string",
@@ -59,7 +59,9 @@
   "scripts": {
     "vscode:prepublish": "tsc -p ./",
     "compile": "tsc -watch -p ./",
-    "postinstall": "node ./node_modules/vscode/bin/install"
+    "postinstall": "node ./node_modules/vscode/bin/install",
+    "vsce:package": "vsce package",
+    "vsce:publish": "vsce publish"
   },
   "devDependencies": {
     "@types/bluebird": "^3.5.19",
@@ -71,19 +73,20 @@
     "@types/request": "^2.0.11",
     "@types/request-promise": "^4.1.39",
     "@types/verror": "^1.10.3",
-    "tslint": "^5.9.1"
+    "mocha": "^4.0.1",
+    "tslint": "^5.9.1",
+    "vsce": "^1.61.0",
+    "typescript": "^2.6.2",
+    "vscode": "^1.1.26"
   },
   "dependencies": {
     "bluebird": "^3.5.1",
-    "css": "^2.2.4",
     "htmlparser2": "^3.9.2",
     "lodash": "^4.17.11",
-    "mocha": "^4.0.1",
+    "postcss": "^7.0.32",
     "request": "^2.88.0",
     "request-promise": "^4.2.1",
     "source-map-support": "^0.5.3",
-    "typescript": "^2.6.2",
-    "verror": "^1.10.0",
-    "vscode": "^1.1.26"
+    "verror": "^1.10.0"
   }
 }
diff --git a/src/extension.ts b/src/extension.ts
index ebfe853..2c0b93b 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -79,7 +79,7 @@ async function cache(): Promise<void> {
 }
 
 function provideCompletionItemsGenerator(languageSelector: string, classMatchRegex: RegExp,
-                                         classPrefix: string = "", splitChar: string = " ") {
+    classPrefix: string = "", splitChar: string = " ") {
     return languages.registerCompletionItemProvider(languageSelector, {
         provideCompletionItems(document: TextDocument, position: Position): CompletionItem[] {
             const start: Position = new Position(position.line, 0);
@@ -147,7 +147,7 @@ export async function activate(context: ExtensionContext): Promise<void> {
             if (e.affectsConfiguration("html-css-class-completion.enableEmmetSupport")) {
                 const isEnabled = workspace.getConfiguration()
                     .get<boolean>("html-css-class-completion.enableEmmetSupport");
-                isEnabled ? enableEmmetSupport(emmetDisposables) :  disableEmmetSupport(emmetDisposables);
+                isEnabled ? enableEmmetSupport(emmetDisposables) : disableEmmetSupport(emmetDisposables);
             }
         } catch (err) {
             err = new VError(err, "Failed to automatically reload the extension after the configuration change");
@@ -174,6 +174,11 @@ export async function activate(context: ExtensionContext): Promise<void> {
         }
     }));
 
+    // Enable Emmet Completion on startup if param is set to true
+    if (workspace.getConfiguration().get<boolean>("html-css-class-completion.enableEmmetSupport")) {
+        enableEmmetSupport(emmetDisposables);
+    }
+
     // Javascript based extensions
     ["typescriptreact", "javascript", "javascriptreact"].forEach((extension) => {
         context.subscriptions.push(provideCompletionItemsGenerator(extension, /className=["|']([\w- ]*$)/));
@@ -181,7 +186,9 @@ export async function activate(context: ExtensionContext): Promise<void> {
     });
 
     // HTML based extensions
-    ["html", "django-html", "razor", "php", "blade", "vue", "twig", "markdown", "erb", "handlebars", "ejs"].forEach((extension) => {
+    ["html", "django-html", "razor", "php", "blade", "vue",
+        "twig", "markdown", "erb", "handlebars", "ejs",
+    ].forEach((extension) => {
         context.subscriptions.push(provideCompletionItemsGenerator(extension, /class=["|']([\w- ]*$)/));
     });
 
diff --git a/src/parse-engines/common/css-class-extractor.ts b/src/parse-engines/common/css-class-extractor.ts
index b314c15..fa0641c 100644
--- a/src/parse-engines/common/css-class-extractor.ts
+++ b/src/parse-engines/common/css-class-extractor.ts
@@ -1,28 +1,25 @@
-import * as css from "css";
+import * as postcss from 'postcss';
 import CssClassDefinition from "../../common/css-class-definition";
 
 export default class CssClassExtractor {
     /**
      * @description Extracts class names from CSS AST
      */
-    public static extract(ast: css.Stylesheet): CssClassDefinition[] {
+    public static extract(ast: postcss.Root): CssClassDefinition[] {
         const classNameRegex: RegExp = /[.]([\w-]+)/g;
 
         const definitions: CssClassDefinition[] = [];
 
         // go through each of the rules...
-        ast.stylesheet.rules.forEach((rule: css.Rule) => {
-            // ...of type rule
-            if (rule.type === "rule") {
-                // go through each of the selectors of the current rule
-                rule.selectors.forEach((selector: string) => {
-                    let item: RegExpExecArray = classNameRegex.exec(selector);
-                    while (item) {
-                        definitions.push(new CssClassDefinition(item[1]));
-                        item = classNameRegex.exec(selector);
-                    }
-                });
-            }
+        ast.walkRules((rule) => {
+            // go through each of the selectors of the current rule
+            rule.selectors.forEach((selector) => {
+                let item: RegExpExecArray = classNameRegex.exec(selector);
+                while (item) {
+                    definitions.push(new CssClassDefinition(item[1]));
+                    item = classNameRegex.exec(selector);
+                }
+            });
         });
 
         return definitions;
diff --git a/src/parse-engines/types/css-parse-engine.ts b/src/parse-engines/types/css-parse-engine.ts
index d8f95a5..f559e13 100644
--- a/src/parse-engines/types/css-parse-engine.ts
+++ b/src/parse-engines/types/css-parse-engine.ts
@@ -1,5 +1,4 @@
-import * as css from "css";
-import * as vscode from "vscode";
+import * as postcss from 'postcss';
 import CssClassDefinition from "../../common/css-class-definition";
 import CssClassExtractor from "../common/css-class-extractor";
 import IParseEngine from "../common/parse-engine";
@@ -11,9 +10,9 @@ class CssParseEngine implements IParseEngine {
 
     public async parse(textDocument: ISimpleTextDocument): Promise<CssClassDefinition[]> {
         const code: string = textDocument.getText();
-        const codeAst: css.Stylesheet = css.parse(code);
-
-        return CssClassExtractor.extract(codeAst);
+        const result = await postcss().process(code);
+        if (!result.root) return [];
+        return CssClassExtractor.extract(result.root);
     }
 }
 
diff --git a/src/parse-engines/types/html-parse-engine.ts b/src/parse-engines/types/html-parse-engine.ts
index a077db3..ecf2b72 100644
--- a/src/parse-engines/types/html-parse-engine.ts
+++ b/src/parse-engines/types/html-parse-engine.ts
@@ -1,8 +1,7 @@
 import * as Bluebird from "bluebird";
-import * as css from "css";
 import * as html from "htmlparser2";
+import * as postcss from 'postcss';
 import * as request from "request-promise";
-import * as vscode from "vscode";
 import CssClassDefinition from "../../common/css-class-definition";
 import CssClassExtractor from "../common/css-class-extractor";
 import IParseEngine from "../common/parse-engine";
@@ -42,7 +41,8 @@ class HtmlParseEngine implements IParseEngine {
             },
             ontext: (text: string) => {
                 if (tag === "style") {
-                    definitions.push(...CssClassExtractor.extract(css.parse(text)));
+                    // this should probably be async... not sure how to do that?
+                    definitions.push(...CssClassExtractor.extract(postcss().process(text).root));
                 }
             },
         });
@@ -52,7 +52,8 @@ class HtmlParseEngine implements IParseEngine {
 
         await Bluebird.map(urls, async (url) => {
             const content = await request.get(url);
-            definitions.push(...CssClassExtractor.extract(css.parse(content)));
+            const postcssResult = await postcss().process(content);
+            definitions.push(...CssClassExtractor.extract(postcssResult.root));
         }, { concurrency: 10 });
 
         return definitions;
diff --git a/test/extension.test.ts b/test/extension.test.ts
index 5c4a4da..bbfe553 100644
--- a/test/extension.test.ts
+++ b/test/extension.test.ts
@@ -4,12 +4,12 @@
 //
 
 // The module 'assert' provides assertion methods from node
-import * as assert from 'assert';
+import * as assert from "assert";
 
 // You can import and use all API from the 'vscode' module
 // as well as import your extension to test it
-import * as vscode from 'vscode';
-import * as myExtension from '../src/extension';
+import * as vscode from "vscode";
+import * as myExtension from "../src/extension";
 
 // Defines a Mocha test suite to group tests of similar kind together
 suite("Extension Tests", () => {
@@ -19,4 +19,4 @@ suite("Extension Tests", () => {
         assert.equal(-1, [1, 2, 3].indexOf(5));
         assert.equal(-1, [1, 2, 3].indexOf(0));
     });
-});
\ No newline at end of file
+});
diff --git a/test/index.ts b/test/index.ts
index 50bae45..78e6119 100644
--- a/test/index.ts
+++ b/test/index.ts
@@ -10,13 +10,13 @@
 // to report the results back to the caller. When the tests are finished, return
 // a possible error to the callback or null if none.
 
-var testRunner = require('vscode/lib/testrunner');
+let testRunner = require("vscode/lib/testrunner");
 
 // You can directly control Mocha options by uncommenting the following lines
 // See https://github.com/mochajs/mocha/wiki/Using-mocha-programmatically#set-options for more info
 testRunner.configure({
-    ui: 'tdd', 		// the TDD UI is being used in extension.test.ts (suite, test, etc.)
-    useColors: true // colored output from test results
+    ui: "tdd", 		// the TDD UI is being used in extension.test.ts (suite, test, etc.)
+    useColors: true, // colored output from test results
 });
 
-module.exports = testRunner;
\ No newline at end of file
+module.exports = testRunner;
diff --git a/tslint.json b/tslint.json
index 0a27bf7..37b0ca0 100644
--- a/tslint.json
+++ b/tslint.json
@@ -5,7 +5,8 @@
     ],
     "jsRules": {},
     "rules": {
-        "no-console": false
+        "no-console": false,
+        "align": false
     },
     "rulesDirectory": []
 }
\ No newline at end of file