update styling and add documentation nav bar

docsite/_themes/srtd/static/css/theme.css

@@ -4634,3 +4634,83 @@ span[id*='MathJax-Span'] {
 #search-box-id {
     padding-right: 25px;
 }
+
+.DocSiteProduct-header {
+    flex: 1;
+    -webkit-flex: 1;
+    padding: 20px;
+    padding-top: 10px;
+    padding-bottom: 20px;
+    display: flex;
+    display: -webkit-flex;
+    flex-direction: column;
+    -webkit-flex-direction: column;
+    align-items: center;
+    -webkit-align-items: center;
+    justify-content: flex-start;
+    -webkit-justify-content: flex-start;
+    margin-left: 20px;
+    margin-right: 20px;
+    text-decoration: none;
+    font-weight: 400;
+    font-family: 'Open Sans', sans-serif;
+}
+
+.DocSiteProduct-header:active,
+.DocSiteProduct-header:focus {
+    color: #fff;
+}
+
+.DocSiteProduct-header:visited {
+    color: #fff;
+}
+
+.DocSiteProduct-header--core {
+    font-size: 25px;
+    background-color: #5bbdbf;
+    border: 2px solid #5bbdbf;
+    border-top-left-radius: 4px;
+    border-top-right-radius: 4px;
+    color: #fff;
+}
+
+.DocSiteProduct-headerAlign {
+    width: 100%;
+}
+
+.DocSiteProduct-logo {
+    width: 60px;
+    height: 60px;
+    margin-bottom: -9px;
+}
+
+.DocSiteProduct-logoText {
+    margin-top: 6px;
+    font-size: 25px;
+}
+
+.DocSite-nav {
+    flex: initial;
+    -webkit-flex: initial;
+    display: flex;
+    display: -webkit-flex;
+    flex-direction: row;
+    -webkit-flex-direction: row;
+    justify-content: flex-start;
+    -webkit-justify-content: flex-start;
+    padding: 15px;
+    background-color: #000;
+    text-decoration: none;
+    font-family: 'Open Sans', sans-serif;
+}
+
+.DocSiteNav-logo {
+    width: 28px;
+    height: 28px;
+    margin-right: 8px;
+}
+
+.DocSiteNav-title {
+    color: #fff;
+    font-size: 20px;
+}