[RA1]: Adding Piccolo theme

doc/ref_arch/openstack/_static/custom.css

@@ -0,0 +1,66 @@
+/* Changing the color of top navbar in piccolo */
+div#top_nav nav {
+    background-color: #16326c;
+    padding:0.5rem;
+}
+
+/* Changing the size of the logo in the top navbar in piccolo */
+div#top_nav nav h1 img {
+	height: 2rem;
+}
+
+/* Changing the margin of the main text in piccolo */
+div.document {
+	margin-left: 10rem;
+	margin-right: 20rem;
+}
+
+/* Changing link color in piccolo */
+a {
+	color: #007574ff;
+}
+
+/* Changing link color in the left sidebar in piccolo */
+div.sphinxsidebar ul li a.current {
+	color: #007574ff;
+}
+
+/* Changing the hover color in the left sidebar in piccolo */
+div.sphinxsidebar ul li a:hover {
+	color: #007574ff;
+}
+
+/* Changing the hover color in the right sidebar in piccolo */
+div#right_sidebar ul li a:hover {
+	color: #007574ff;
+}
+
+/* Changing the color of the > icon next to Page contents */
+div#right_sidebar p span.icon {
+	color: #007574ff;
+}
+
+/* Changing the color of the Page contents title */
+div#right_sidebar p span {
+	color: #007574ff;
+}
+
+/* Changing the color of the search button */
+div.document form input[type=submit], div.document form button {
+	background-color: #16326c;
+}
+
+/* Changing the color of the Search text in the Search button */
+div#searchbox form.search input[type="submit"] {
+	color: #16326c;
+}
+
+/* Changing the color of the > icon next to the collapsed Page contents */
+div#show_right_sidebar p span.icon {
+	color: rgba(0, 0, 0, 0.6);
+}
+
+/* Removing option to switch to dark mode */
+div#top_nav nav a#mode_toggle, div#top_nav nav a#source_link {
+	display: none;
+}

doc/ref_arch/openstack/conf.py

@@ -20,6 +20,24 @@
 ]
 autosectionlabel_prefix_document = True
 autosectionlabel_maxdepth = 4
+
+html_css_files = [
+    'custom.css',
+]
+
+html_show_sourcelink = False
+html_theme_options = {
+    # If False, expand all TOC entries
+    'globaltoc_collapse': False,
+    # If True, show hidden TOC entries
+    'globaltoc_includehidden': False,
+}
+
+# Inverse png
+html_logo = '_static/anuket-logo.png'
+html_favicon = '_static/favicon.ico'
+
+
 numfig = True
 numfig_format = {'figure': 'Figure %s', 'table': 'Table %s',
                  'code-block': 'Listing %s', 'section': 'Section %s'}

doc/ref_arch/openstack/test-requirements.txt

@@ -1,8 +1,7 @@
 # The order of packages is significant, because pip processes them in the order
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
-sphinx!=1.6.6,!=1.6.7,!=2.1.0,!=3.0.0,!=3.4.2 # BSD
-sphinx-rtd-theme  # MIT
+sphinx # BSD
 doc8 # Apache-2.0
 piccolo-theme
 sphinxcontrib-bibtex