JSFiddle - React, Tailwind, and code Playground

by Slico

HTML

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
</head>
<body>
  <div class="circle">
    <div class="triangle"></div>
  </div>
</body>
</html>

CSS

.circle{
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: tomato;
}

.triangle{
  width: 0;
height: 0;
border-style: solid;
border-width: 0 100px 100px 100px;
border-color: transparent transparent #007bff transparent;
}