how to remove the dotted line around the clicked a element in html

Question

I found that if there is a a link in the page which does not link to a new page,then when user click it,there will be a dotted line around the element,it will o

Answer 1

In my case it was a button, and apparently, with buttons, this is only a problem in Firefox. Solution found here:

button::-moz-focus-inner {
  border: 0;
}