JSFiddle - React, Tailwind, and code Playground

by Lokesh Yadav

HTML

<div id="app">

</div>
<div class="form">

</div>
</div>

CSS

rem vs px

font-size: 2rem;
px ?
pseudoselectors

1 1 1
html #app .form {
  border-color: red;
}
1 1 0
#app .form {
  border-color: blue;
}

.form{
  width: 200px;
  height: 200px;
  border: 2px solid black;
  background: cornsilk; 
}