Did you know there is a CSS property that can change the user selection behavior?

It got some quite good support lately and is one of these cool gimmicks to have. It doesn't break anything for the browser that doesn't support it.

The end result will look like this.

HTML Structure

For our demo, we will have multiple paragraphs that will each do something different.

<div>
  <h3>Select this paragraph in yellow marker</h3>
  <p class="yellow">Content here</p>
</div>

<div>
  <h3>Select this paragraph in black/white</h3>
  <p class="black">Content here</p>
</div>

<div>
  <h3>Select this paragraph in shadow text</h3>
  <p class="shadow">Content here</p>
</div>

CSS Selection selector

Now we are going to use the selection attribute selector.

The default selector is written like this:

::selection {
  color: red;
}

Then we can add a Mozilla specific one:

::-moz-selection {
  color: red;
}

For our instance let's start with the yellow marker one:

p.yellow::selection {
  background: #FFFF00;
}
p.yellow::-moz-selection {
  background: #FFFF00;
}

This will make the background of the selection a yellow color.

Now if we move on to our black and white selector:

p.black::selection {
  background: #000;
  color: #fff;
}
p.black::-moz-selection {
  background: #000;
  color: #fff;
}

This will make the background black and the text color white.

Lastly I wanted to show you can do more then basic color selection and even add a text-shadow!

p.shadow::selection {
  text-shadow: 2px 2px 2px rgba(0, 0, 0, 0.5);
}
p.shadow::-moz-selection {
  text-shadow: 2px 2px 2px rgba(0, 0, 0, 0.5);
}

Have a play around on this Codepen.

Browser Support

The browser support for the ::selection has really improved lately, and it can be used safely.

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