happy_diwali.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Happy Diwali</title>
    <style>
        *{
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: sans-serif;
        }
        section {
            height: 100vh;
            width: 100%;
            background: #000;
            display:flex;
            justify-content: center;
            align-items: center;
            overflow: hidden;
        }
        section h1{
            position: relative;
            color: #fff;
            font-size: 8em;
            z-index: 999999;
            user-select: none;
            mix-blend-mode: overlay;
        }
        section video{
            position: absolute;
            height: 100%;
            width: 100%;
            object-fit: cover;
        }

    </style>
</head>
<body>
    <section>
        <h1>Happy Diwali</h1>
        <video src="assets/smoke.mp4" autoplay muted loop type="mp4"></video>
    </section>
</body>
</html>