Update frontend/styling/server-selector.css

Co-authored-by: qodo-merge-pro-for-open-source[bot] <189517486+qodo-merge-pro-for-open-source[bot]@users.noreply.github.com>

frontend/styling/server-selector.css

@@ -32,8 +32,8 @@
       content: "";
       position: absolute;
       display: block;
-      width: 32;
-      height: 32;
+      width: 32px;
+      height: 32px;
       right: 1.8rem;
       top: 1rem;
     }