html - How to change the style of the title attribute inside an anchor tag?

Question

Example:

<a href="example.com" title="My site"> Link </a>

How do I change the presentation of the "title" attribute in the browser?. By default, it just has yellow background and small font. I would like to make it bigger and change the background color.

Is there a CSS way to style the title attribute?

Answer 1

It seems that there is in fact a pure CSS solution, requiring only the css attr expression, generated content and attribute selectors (which suggests that it works as far back as IE8):

https://jsfiddle.net/z42r2vv0/2/

a {
  position: relative;
  display: inline-block;
  margin-top: 20px;
}

a[title]:hover::after {
  content: attr(title);
  position: absolute;
  top: -100%;
  left: 0;
}

<a href="http://www.google.com/" title="Hello world!">
  Hover over me
</a>