[settings] redesigned the 'heading' bar; fixup for the side nav; impr… (#6250)

* [settings] redesigned the 'heading' bar; fixup for the side nav; improved UI for content headings

* [settings] resigned it (the top bar, the side panel; the code frame)

frontend/src/css/user-settings.css

@@ -4,52 +4,24 @@ body {
 #wrapper {
   height: 100%;
 }
-.top-header {
-  background: #f4f4f7;
-  border-bottom: 1px solid #e8e8e8;
-  padding: .5rem 1rem;
-  flex-shrink: 0;
+
+.main-panel {
+  overflow: hidden;
 }
 
-.side-panel {
-  flex: 0 0 22%;
-  padding: 1rem;
-  border-right: 1px solid #eee;
-}
-.main-panel {
-  flex: 1 0 78%;
-}
-.heading {
-  padding: 8px 16px;
-  background: #f9f9f9;
-  font-size: 1rem;
-  color: #212529;
-  font-weight: normal;
-  line-height: 1.5;
-  margin:0;
-  position: relative;
-}
-.heading:after {
-  position: absolute;
-  left: 16px;
-  right: 16px;
-  bottom: 0;
-  content: '';
-  border-bottom: 1px solid #e8e8e8;
-}
 .content {
   padding: 0rem 1rem 8rem;
   overflow: auto;
 }
 .setting-item {
   font-size: 0.875rem;
-  margin: 1em 0 3em;
+  padding: 1em 0 3em;
 }
 .setting-item-heading {
   font-size: 0.9375rem;
   font-weight: normal;
   padding-bottom: 0.3rem;
-  border-bottom: 1px solid #ddd;
+  border-bottom: 1px solid #eee;
   margin-bottom: 0.7rem;
 }
 .user-avatar {
@@ -69,20 +41,6 @@ body {
   text-align: center;
   cursor: pointer;
 }
-.user-setting-nav .nav-item .nav-link {
-  flex: auto;
-  margin: 0;
-  padding-left: 1em;
-  border-left: 2px solid transparent;
-  color: #212529;
-}
-.user-setting-nav .nav-item.active .nav-link {
-  color: #ff9800;
-  border-color: #ff9800;
-}
-.user-setting-nav .nav-item .nav-link:hover {
-  color: #eb8205;
-}
 .eye-icon {
   color: #666;
 }