Thanks for contacting us and choosing our product!
You can go to Appearance -> Customize -> Additional CSS and add this code:
We already added it for you now.
How to get this code you can see in this video tutorial:
Here is document: https://document.harutheme.com/pangja/
Video tutorial: https://www.youtube.com/channel/UCnOxXtfrkgq92wgqJCBi55g/videos?view_as=subscriber
In our theme have a notice that Page Options will override Theme Options. You can understand more about it follow this topic: https://harutheme.com/forums/topic/why-theme-options-doesnt-apply-changes/
Hope this helps!