If you open the theme dropdown, the option menu is placed underneath the ad container (`#semantic-sponsor`). See the screenshot below:  It can be fixed by changing `z-index` of `#semantic-sponsor` from 3 to 2. I can submit a PR for this, if needed.
If you open the theme dropdown, the option menu is placed underneath the ad container (
#semantic-sponsor). See the screenshot below:It can be fixed by changing
z-indexof#semantic-sponsorfrom 3 to 2.I can submit a PR for this, if needed.