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Boost uses Font Awesome, the world’s most popular icon set.

To add an icon with a background color, add a container with the class .icon and the .icon-{color}. Then include an icon inside with the class .icon-inner.

You can change the icon size by adding .icon-sm or .icon-lg.

<span class="icon icon-lg icon-success">
<i class="icon-inner fas fa-desktop"></i>
<span class="icon icon-warning">
<i class="icon-inner fas fa-tablet-alt"></i>
<span class="icon icon-sm icon-primary">
<i class="icon-inner fas fa-mobile-alt"></i>


If your icons are purely decorative, add an aria-hidden attribute.

<span class="icon icon-sm icon-primary">
<i class="icon-inner fas fa-mobile-alt" aria-hidden="true"></i>

If your icons have semantic meaning, in addition to the aria-hidden attribute, provide a text alternative. You can hide this text while keeping it accessible for assistive technologies using .visually-hidden.

<a class="icon icon-sm icon-secondary" href="#">
<i class="icon-inner fab fa-twitter" aria-hidden="true"></i>
<span class="visually-hidden">Twitter</span>

See all available icons.