How remove border around image in css?

Question

I try to display a span when the cursor of the mouse is on a help icon.

It works, but nevertheless, I don\'t manage to remove the border around the icon.

My

Answer 1

Thank for the answers,

The border is removed for Internet Explorer, but this there for Firefox.

So, I added this class to the img:

.clearBorder{border:none;}

And it worked!