world, I added this code added in my header : `` And I just

Hello world,

I added this code added in my header :
<link rel=&quot;stylesheet&quot; href=&quot;https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css&quot;>

And I just spent way too much time identifying a problem, which is the addition of this Bootstrap code in my theme that reduce the length of some fields *see 2 images

Now that I know what the problem is : Any idea how to fix this ?
Thanks for any tip you may have