add rounding for first and last items in theme selector

[funkill]

No description provided.

[azerupi]

What does this change for you? I tried to apply this in browser (firefox) and it doesn't seem to change much for me.

[funkill]

it's not critical and changes sees only in very big zoom: hovered area has rectangle figure without rounded angles, but theme selector's angles is rounded
in picture: up - in master, down - in this commit

[azerupi]

Ah yes, I wasn't zoomed in enough to see it clearly. It's good, I will
merge when I come home. Thanks! :)
On Feb 16, 2016 9:40 AM, "funkill" notifications@github.com wrote:

it's not critical and changes sees only in very big zoom: hovered area has
rectangle figure without rounded angles, but theme selector's angles is
rounded
in picture: up - in master, down - in this commit
[image: theme selector]
https://cloud.githubusercontent.com/assets/4323287/13071014/b02be040-d4a1-11e5-928e-a5d3da2c710f.png

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https://github.com/azerupi/mdBook/pull/108#issuecomment-184576943.