move dropdown-menu div to the Dropdown component

Author: ewof

src/shared/Dropdown.tsx

@@ -19,7 +19,11 @@ const Dropdown: Component<{ children: JSX.Element; label: string }> = (
         <ChevronDown />
         {props.label}
       </Button>
-      <Show when={open()}>{props.children}</Show>
+      <Show when={open()}>
+        <div class="dropdown-menu">
+          {props.children}
+        </div>
+      </Show>
     </div>
   );
 };