Modified CSS to bring docs theme into alignment with R3 corporate theme and corda.net website aesthetics.

Signed-off-by: David Lee <david.lee@r3cev.com>

docs/source/_static/css/custom.css

@@ -1,35 +1,159 @@
 @import "theme.css";
+/* Highlights */
 
-.highlight .k, .highlight .kd {
-    color: blue;
+.highlight .k,
+.highlight .kd {
+      color: #263673;
 }
 
-.codesnippet-widgets {
-    min-width: 100%;
-    display: block;
-    background: lightskyblue;
-    color: white;
-    padding: 10px 0;
-    margin: 0 0 -1px 0;
-}
-
-.codesnippet-widgets > span {
-    padding: 10px;
-    cursor: pointer;
-}
-
-.codesnippet-widgets > .current {
-    background: deepskyblue;
-}
-
-.codeset > .highlight-java {
-    display: none;
-}
-
-.wy-nav-content {
-    max-width: 1000px;
+ /* Text */
+body,
+h1,
+h2,
+.rst-content .toctree-wrapper p.caption,
+h3,
+h4,
+h5,
+h6,
+legend,
+input{
+      color:#010101;
+      letter-spacing:0.3px
 }
 
 p {
-    font-size: 100%; /* Get rid of RTD rule that assumes nobody changes their browser font size */
-}
+        font-size: 100%; /* Get rid of RTD rule that assumes nobody changes their browser font size */
+}
+
+ /* Links */
+a{
+      color: #263673
+}
+a:hover{
+       color: #005CAB
+}
+a:visited{
+       color:#ADAFB3
+}
+
+ /* Side navigation bar */
+
+.wy-side-nav-search{
+	background-color:#010101;
+
+}
+
+.wy-side-nav-search a.icon-home{
+        color:transparent;
+        background-image:url('../images/fg002_corda_w3.png');
+	background-repeat:no-repeat;
+	background-size: Auto 20px;
+	background-position:center top;
+	background-origin:content box;
+	height:20px;
+	width:100%
+
+}
+
+.wy-side-nav-search input[type=text]{
+	border-radius:5px
+}
+
+.wy-menu-vertical a:hover{
+        background-color: #ADAFB3;
+        color:#FFF
+}
+
+.wy-nav-content{
+	background-color:#fff
+        max-width: 1000px;
+}
+
+.wy-nav-side{
+	background:#010101
+}
+ /* Navigation headers */
+.rst-content tt.literal, .rst-content tt.literal, .rst-content code.literal
+{
+	color:#EC1D24;
+	text-transform:none;
+}
+
+
+.wy-menu-vertical header, .wy-menu-vertical p.caption
+{
+	font-size:1.1em;
+	color:#EC1D24;
+	text-transform:none;
+
+}
+
+ /* Code snippets */
+
+.codesnippet-widgets {
+        min-width: 100%;
+        display: block;
+        background: #005CAB;
+        color: white;
+        padding: 10px 0;
+        margin: 0 0 -1px 0;
+}
+
+.codesnippet-widgets > span {
+        padding: 10px;
+        cursor: pointer;
+}
+
+.codesnippet-widgets > .current {
+        background: #263673;
+}
+
+.codeset > .highlight-java {
+        display: none;
+}
+
+
+/* Notification boxes */
+.wy-alert.wy-alert-warning .wy-alert-title,
+.rst-content .wy-alert-warning.note .wy-alert-title,
+.rst-content .attention .wy-alert-title,
+.rst-content .caution .wy-alert-title,
+.rst-content .wy-alert-warning.danger .wy-alert-title,
+.rst-content .wy-alert-warning.error .wy-alert-title,
+.rst-content .wy-alert-warning.hint .wy-alert-title,
+.rst-content .wy-alert-warning.important .wy-alert-title,
+.rst-content .wy-alert-warning.tip .wy-alert-title,
+.rst-content .warning .wy-alert-title,
+.rst-content .wy-alert-warning.seealso .wy-alert-title,
+.rst-content .admonition-todo .wy-alert-title,
+.wy-alert.wy-alert-warning .rst-content .admonition-title,
+.rst-content .wy-alert.wy-alert-warning .admonition-title,
+.rst-content .wy-alert-warning.note .admonition-title,
+.rst-content .attention .admonition-title,
+.rst-content .caution .admonition-title, .rst-content
+.wy-alert-warning.danger .admonition-title,
+.rst-content .wy-alert-warning.error .admonition-title,
+.rst-content .wy-alert-warning.hint .admonition-title,
+.rst-content .wy-alert-warning.important .admonition-title,
+.rst-content .wy-alert-warning.tip .admonition-title,
+.rst-content .warning .admonition-title,
+.rst-content .wy-alert-warning.seealso .admonition-title,
+.rst-content .admonition-todo .admonition-title{
+        background-color: #263673
+}
+
+.wy-alert,
+.rst-content .note,
+.rst-content .attention,
+.rst-content .caution,
+.rst-content .danger,
+.rst-content .error,
+.rst-content .hint,
+.rst-content .important,
+.rst-content .tip,
+.rst-content .warning,
+.rst-content .seealso,
+.rst-content .admonition-todo{
+        background-color:#d9e5ef
+}
+