JSFiddle - React, Tailwind, and code Playground
HTML
<div class="radius">
<div class="gradient-border-bg">f x xcf x bdbdsb</div>
</div>
CSS
body {
background-color: #fff;
}
.radius {
border-radius: 20px;
overflow: hidden;
}
.gradient-border-bg {
border: 5px solid;
border-image: linear-gradient(45deg, purple, orange) 1;
padding: 1rem;
border-radius: 20px;
}