Increase target area of buttons?

[Flash04jv]

Wondering if I can increase the target area on buttons. A few updates ago the 'Messages' button at the top got really small it seemed. Like you really need to click exactly in the middle to get it to function.

I'm sure there's risk of overlapping other buttons, but just a slight increase would make life easier if possible. Hoping I can do something in CSS, I'm not home to mess with it right now, just wondering if it's even doable.

[Flash04jv]

I was able to put together a CSS that increased the clickable area, but then it made those divider lines beside "Messages" look weird. I tried to move them around and gave up, oh well.