Mobile menu has a very very small tap target

[ckipp01]

Describe the issue

When reading through accessibility guides you'll commonly see it mentioned that accessible tap targets are around 9mm. This ends up being more or less 45px by 45px. The current reference docs has a hit size of 16 x 16 making a user on mobile actually struggle to be able to hit it. I had to try multiple times to actually get this to work on a modern iPhone.

[Dedelweiss]

I made a first proposal to increase the tap target. Instead of making a padding, I did a width for the close button because the left padding is different.