editor: added css for editor rendered output

Author: Fatimah

invenio_theme/assets/semantic-ui/less/invenio_theme/theme/globals/site.overrides

@@ -636,3 +636,18 @@ code {
     list-style-type: none !important;
   }
 }
+
+/* TinyMCE Editor Output */
+.rich-input-content
+ {
+  table, td, th {
+      border: 1px dashed @lightGray;
+      border-collapse: collapse;
+      padding: 1rem;
+  }
+}
+blockquote{
+  border-left: 4px solid @lightGray;
+  margin-left: 1.5rem;
+  padding-left: 1rem;
+}

invenio_theme/assets/semantic-ui/less/invenio_theme/theme/globals/site.variables

@@ -12,7 +12,7 @@
 
 @mutedTextColor      :  #757575;
 @textMutedColorDarken:  #4A4A4A;
-
+@lightGray: #C5C5C5;
 @neutralColor: @grey;
 @darkGray: #333;
 @warningColor: @yellow;