'How do I use font awesome in Gitbook?

I noticed that font awesome is integrated into Gitbook. We have the following files under _book/gitbook/fonts/fontawesome/,

FontAwesome.otf  
fontawesome-webfont.eot  
fontawesome-webfont.svg  
fontawesome-webfont.ttf  
fontawesome-webfont.woff  
fontawesome-webfont.woff2

I add an icon, say <i class="fa-solid fa-circle"></i>, to a markdown file, however, the icon didn't show up as shown below.

enter image description here

How can I use awesome font in Gitbook?



Solution 1:[1]

GitBook doesn't support all awesome icon fonts. It would work using icons from Font Awesome Free's Cheatsheet.

Sources

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Source: Stack Overflow

Solution Source
Solution 1