💡 Icons support?

[ChALkeR]

Example:

.universal-🎉::before {
    display: inline;
    content: '🎉';
}

<i class="universal-🎉"></i> would show «🎉». Isn't that great? And users could restyle that with any images they want (e.g. «🎉»)! Finally, universal portable icons for everyone.

Bonus: no more unobvious names, you won't have to remember those anymore.

[Shnoulle]

Why not directly :

🍻::before {
    display: inline-block;
    content: '🍻';
}

[ChALkeR]

@Shnoulle That would be perfect.