KnowCSS, the NoCSS Engine (beta v1.0.7) https://www.knowcss.com/
<script src="https://cdn.jsdelivr.net/gh/knowcss/knowcss@latest/knowcss.js">
</script>
<script>
window.addEventListener(
"load",
event=>{KnowCSS("root")}
);
</script>
<div id="root">
<div class="bold color-black font-size-16px">Hello, world!</div>
</div>
Copyright (c) 2021 Jeremy Anderson. KnowCSS is available under the MIT License.