body {
            margin: 0;
            padding: 0;
            font-family: "Segoe UI", Arial, sans-serif;
            background: linear-gradient(135deg, #ff758c, #ff7eb3);
            height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .box {
            background: white;
            padding: 40px;
            width: 350px;
            border-radius: 15px;
            text-align: center;
            box-shadow: 0px 10px 30px rgba(0,0,0,0.2);
        }

        h3 {
            color: #b3003c;
            margin-bottom: 20px;
        }

        a {
            display: inline-block;
            margin-top: 20px;
            padding: 10px 20px;
            background: #ff4d6d;
            color: white;
            text-decoration: none;
            border-radius: 8px;
            transition: 0.3s ease;
        }

        a:hover {
            background: #d73757;
        }