Css for window titlebar and icons bar

I increased font size and:

  1. title bar is very narrow, I want to increase it
  2. icons are below the area where they originally fitted - maybe it is a bug

Increasing value line hight to 3.5em or more causes icon to move down:

What are css element values for it?
I read about Ctrl+Shift+I but wasn’t able to identify it.

It would be great if this program could have some options or plug-ins to style colors, font size and other values of layout. Not that I complain but the idea of the program is amazing, while the necessity to learn css for making basic adjustment to make the program usable is a nightmare. I hope developers will sort it out before “stable” release.

By the way, it would be great if changing values in this Ctrl+Shift+I could be saved automatically in css file.

 .view-header {
 height: 36px;
 display: flex;
 border-top: 1px solid var(--background-secondary-alt);
 border-bottom: 2px solid var(--background-secondary-alt);
 background-color: var(--background-secondary);
 z-index: 1;

I’m not an CSS expert. Play with this.