minimal update to styling

src/plugins/topbar/topbar.jsx

@@ -83,7 +83,13 @@ export default class Topbar extends React.Component {
         rows.push(<option key={i} value={link.url} selected={i===this.state.selectedIndex}>{link.name}</option>)
       })
 
-      control.push(<select disabled={isLoading} onChange={ this.onUrlSelect }>{rows}</select>)
+      control.push(
+        <label className="select-label" htmlFor="select"><span>Select a URL</span>
+          <select id="select" disabled={isLoading} onChange={ this.onUrlSelect }>
+            {rows}
+          </select>
+        </label>
+      )
     }
     else {
       formOnSubmit = this.downloadUrl

src/plugins/topbar/topbar.less

@@ -1,11 +1,10 @@
 .swagger-ui {
-
   .topbar {
     background-color: #89bf04;
   }
 
   .topbar-wrapper {
-    padding: 0.7em
+    padding: 0.7em;
   }
 
   .topbar-logo__img {