Reply To: [Solved] calc not always working in IE

[Mave]

Here’s my Codepen: http://codepen.io/anon/pen/myKZJE?editors=110

EDIT: I can’t seem to re-produce the IE bug…
Maybe anyone knows a solution for me to not use calc() here?
I’m sure the IE bug will also disappear then.

I tried using box sizing border box as an alternative, but I can’t make it work.. : http://codepen.io/anon/pen/XJYLRw