Rainbow Button

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Rainbow Button</title>
    <style>
        body {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            background-color: #1a1a1a;
            margin: 0;
        }
        .rainbow-button {
            position: relative;
            padding: 20px 40px;
            font-size: 18px;
            font-weight: bold;
            color: #fff;
            background: linear-gradient(90deg, #ff0000, #ff7f00, #ffff00, #00ff00, #0000ff, #4b0082, #8b00ff);
            background-size: 400% 400%;
            border: none;
            border-radius: 30px;
            cursor: pointer;
            outline: none;
            animation: gradient 5s ease infinite;
            transition: all 0.3s ease;
        }
        .rainbow-button:hover {
            animation: gradient 2s ease infinite;
        }
        @keyframes gradient {
            0% {
                background-position: 0% 50%;
            }
            50% {
                background-position: 100% 50%;
            }
            100% {
                background-position: 0% 50%;
            }
        }
        .rainbow-button span {
            position: relative;
            z-index: 1;
        }
    </style>
</head>
<body>
    <button type="button" class="rainbow-button">
        <span>Rainbow Effect</span>
    </button>
</body>
</html>

Rainbow Button - VexaX