Styling catalog sidebar (#2496)

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

src/renderer/components/+catalog/catalog.scss

@@ -1,15 +1,48 @@
 .CatalogPage {
   --width: 100%;
   --height: 100%;
-  --nav-column-width: 230px;
-  text-align: left;
+  --nav-column-width: 200px;
 
   .sidebarRegion {
     justify-content: flex-start;
+    background-color: var(--sidebarBackground);
+
+    .sidebarHeader {
+      background: var(--sidebarLogoBackground);
+      height: var(--main-layout-header);
+      padding: 4px;
+      color: var(--textColorAccent);
+      font-weight: bold;
+      font-size: 14px;
+      display: flex;
+      align-items: center;
+      padding-left: 10px;
+    }
+
+    > .sidebar {
+      width: 100%;
+
+      .sidebarTabs {
+        margin-top: 5px;
+
+        .Tab {
+          padding: 7px 10px;
+          font-weight: normal;
+          font-size: 14px;
+          border-radius: 0;
+          height: 36px;
+
+          &.active {
+            background-color: var(--blue);
+            color: white;
+          }
+        }
+      }
+    }
   }
 
   .contentRegion {
-    .content {
+    > .content {
       padding: 20px 20px;
     }
   }

src/renderer/components/+catalog/catalog.tsx

@@ -114,10 +114,12 @@ export class Catalog extends React.Component {
   renderNavigation() {
     return (
       <Tabs className="flex column" scrollable={false} onChange={this.onTabChange} value={this.activeTab}>
-        <div className="header">Catalog</div>
-        { this.categories.map((category, index) => {
-          return <Tab value={category.getId()} key={index} label={category.metadata.name} data-testid={`${category.getId()}-tab`} />;
-        })}
+        <div className="sidebarHeader">Catalog</div>
+        <div className="sidebarTabs">
+          { this.categories.map((category, index) => {
+            return <Tab value={category.getId()} key={index} label={category.metadata.name} data-testid={`${category.getId()}-tab`} />;
+          })}
+        </div>
       </Tabs>
     );
   }