Gradient Underline

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Gradient Underline</title>
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Comfortaa:[email protected]&display=swap" rel="stylesheet"> 
    <style>
        * {
            margin: 0;
            padding: 0;
        }

        body { background-color: #383838; }
        
        section {
            width: 100%;
            height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        h1 {
            color: #fff;
            font-size: 80px;
            font-family: 'Comfortaa', cursive;
            font-weight: bold;
            background: linear-gradient(30deg, #fa009a, #3afa00, #6600ec);
            background-repeat: no-repeat;
            background-size: 100% 4px;
            background-position: bottom;
        }

    </style>
</head>
<body>
    <section>
        <h1>Geekboots</h1>
    </section>
</body>
</html>

Result Screenshot(s)

Gradient UnderlineWorking Sample0