extension/index.html
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>DevTools for Floating UI</title>
<style>
html,
body {
font-size: 16px;
width: 100%;
height: 100%;
padding: 0;
margin: 0;
}
#root {
height: inherit;
width: inherit;
}
</style>
</head>
<body>
<div id="root"></div>
<script type="module" src="src/index.tsx"></script>
</body>
</html>