underline and like a whole link

Question

I am trying to underline with one line the and the

I want it all to be a link with an underline. It leaves a small spa

Answer 1

You may add it on hover, but you need to pay attention as there is top:1px set to the icons by default so you need to remove it to have a full continuous line:

a.good .glyphicon {
  top: 0;
}

a:hover .glyphicon {
  text-decoration: underline;
}

Good one   
  





Bad one   
  

Another solution is to make them inline as by default they are inline-block and if you refer to the specification:

Note that text decorations are not propagated to floating and absolutely positioned descendants, nor to the contents of atomic inline-level descendants such as inline blocks and inline tables.

a .glyphicon {
  top: 0;
  display: inline;
}

Saber mais   
  

---

And to explain the small line you see between the two icons initially:

Underlines, overlines, and line-throughs are applied only to text (including white space, letter spacing, and word spacing): margins, borders, and padding are skipped

So if you remove any white space you will see the line under the text only:

Good one

UPDATE

As pointed in the comment, different font-size between the text and the icon will make the underline different, so we may rely on border in this case:

a:hover {
 text-decoration:none!important;
 border-bottom:1px solid
}
.glyphicon {
  font-size:20px;
}

Good one