message: Fix backgrounds
diff: height: 200px;
  border-top: 1px solid var(--playground-border);
  + @include dark-mode {
  .empty-panel {
  background-color: #282c34;
  }
  }
  +}
  .diagnostics-tabs {
  height: 100%;
  @@ -25,7 +27,10 @@ ul.diagnostics-list {
  font-size: 14px;
  height: 100%;
  overflow: auto;
  +
  + @include dark-mode {
  background-color: #282c34;
  + }
  li {
  padding-right: 10px;
  