How Can I Customize the Appearance of Anchor Element Tooltips with CSS?

Customizing the Appearance of Anchor Element Tooltips

When using anchor tags with the title attribute, the tooltip that appears by default provides limited customization options. It typically features a small font and a simple yellow background.

If you seek greater control over the tooltip's presentation, CSS offers a solution. Utilizing the css attr expression, alongside generated content and attribute selectors, you can refine the tooltip's style.

Example:

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

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

HTML:

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

With this CSS, upon hovering over the anchor tag, the tooltip appears below it, displaying the title attribute's content. You can further customize the tooltip's appearance by modifying properties such as font size, color, and background style.

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