ls is a class like <code>button_fvp6zc2gdj35evhsl73ffzq_0 danger_fgdl0s2a5fmle5g56rbuax71_0</code> with useless source maps (or worse, entirely cryptic class names).</p>
<p>Another common issue is lack of support for less basic CSS features such as <code>@keyframes</code> and <code>@font-face</code>.</p>
<p>If you are adamant about using a CSS-in-JS library, consider using <a href="https://github.com/j2css/j2c">J2C</a>, which works without configuration and implements <code>@keyframes</code> and <code>@font