Text Filling Effect

<!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>Text Filling Effect</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=Oswald:[email protected]&display=swap" rel="stylesheet"> 
    <style>
        * {
            margin: 0;
            padding: 0;
            font-family: 'Oswald', sans-serif;
        }

        body {
            background-color: #292929;
        }

        section {
            display: flex;
            justify-content: center;
            align-items: center;
            width: 100%;
            height: 100vh;
        }

        h1 {
            font-size: 80px;
            font-weight: 600;
            color: #fff;
            letter-spacing: 5px;
            position: relative;
        }

        h1::before {
            position: absolute;
            content: attr(data-info);
            color: #fbff00;
            bottom: 0;
            left: 0;
            right: 0;
            top: 0;
            height: 0;
            overflow: hidden;
            transition: 0.5s all linear;
        }

        h1:hover::before {
            height: 100%;
        }
    </style>
</head>
<body>
    <section>
        <h1 data-info="Geekboots">Geekboots</h1>
    </section>
</body>
</html>
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Result Screenshot(s)

Text Filling EffectWorking Sample0