The tiny little clan bio box always bothered me, and after seeing no styles to remedy this issue, I decided to whip one up myself.

This style allows the bio box to expand up to a certain amount. By default, that amount is set at 1000px, but it can be set to any number that fits your screen. The limit can even be removed altogether!

Tweaking Guide:

1) Go to www.flightrising.com
2) Click on the Stylish Icon in the top right corner.
3) Click "Manage Style" to reach your list of installed styles.
4) Find "Expanding Clan/User Bio Box", click edit.
5) To adjust the limit, change the pixel amount on both "max-height" tags. Make sure both are the same number. To remove the limit, delete both "max-height" lines.
6) Click "save" in the top left-hand corner, under the style name.
7) Continue to adjust to your liking.

Note: It's a pretty simple style, only a few lines of code, however, if it gives you any problems, let me know!

---UPDATE: Made more user friendly to tweak and edit, added a min-height tag.---