JSFiddle - React, Tailwind, and code Playground

by 규연 황

HTML

<div class="box">
  blueviolet
</div>

CSS

.box {
  width: 300px;
  height: 300px;
  border: 15px solid;
  border-image-source: linear-gradient(blueviolet, hotpink);
  border-image-slice: 1;
  border-image-width: 1;
  border-image-outset: 0;
  border-image-repeat: stretch;
  display: grid;
  place-items: center;
}