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Gunnar Bittersmann

Thanks for sharing this tip.

Just don’t use random characters when there are appropriate Unicode characters like U+2665 ♥ available:
<a href=”/” class=“icon” data-icon=“k”>Favourites</a>
shold be
<a href=”/” class=“icon” data-icon=“♥”>Favourites</a>.

Using appropriate characters ensures that the desired symbols will be displayed (in some system font that contains a glyph for that particular symbol) even if the desired webfont is not loaded.

Check the Unicode charts for symbols.