Board Thread:Support Requests - Getting Technical/@comment-26293360-20190312221515/@comment-9605025-20190406012251

You can style the tab that the user is currently hovering over by using the ":hover" selector.

By default, the labels are centered vertically and horizontally. So something in your custom CSS must be changing that.

To get the tab borders to be a single line between each other, set the left and right margins to -0.5x whatever your border width is. To get rid of the gap at the bottom, set the bottom margin to 0.