Q:

Masking with CSS

I have a webpage with a box and want to place a text label over the border of the box, and hide the border underneath.  Right now I am doing it like this:
http://www.esims.nl/test/aspnet/2016_11_stackoverflow/
I wonder if there is a better way, like masking or something.  Since I am using different div's with background images, instead of CSS3. 
Update: the fieldset seemed just what I asked for, but unfortunately it doesn't work well in IE11 with rounded borders.  Unless anyone knows a good fix for this, I cannot use the fieldset, and will continue with my own fieldset lookalike solution (the example above). 

A:

It's simply, there's a HTML tag for that called fieldset
<div class="wrapper">
  <fieldset>
  <legend>Label of the box:</legend>
    Content
  </fieldset>
</div>

You can read more about it here:
http://www.w3schools.com/tags/tag_fieldset.asp
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/fieldset

