Professional Flicker Button

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Professional Flicker Button</title>
    <style>
        body {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            background-color: #fff;
            margin: 0;
        }
        .flicker-button {
            padding: 20px 40px;
            font-size: 18px;
            font-weight: bold;
            color: #fff;
            background: #9b59b6;
            border: none;
            border-radius: 30px;
            cursor: pointer;
            outline: none;
            animation: flicker 1.5s infinite alternate;
        }
        @keyframes flicker {
            0% {
                opacity: 1;
            }
            50% {
                opacity: 0.5;
            }
            100% {
                opacity: 1;
            }
        }
        .flicker-button span {
            position: relative;
            z-index: 1;
        }
    </style>
</head>
<body>
    <button type="button" class="flicker-button">
        <span>Professional Flicker</span>
    </button>
</body>
</html>

Professional Flicker Button - VexaX