* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f5f7fa;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    background: #ffffff;
    max-width: 600px;
    width: 100%;
    padding: 50px 40px;
    text-align: center;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.icon {
    font-size: 70px;
    margin-bottom: 20px;
}

h1 {
    font-size: 30px;
    color: #222;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

p {
    font-size: 18px;
    color: #666;
    line-height: 1.6;
}

.btn {
    display: inline-block;
    margin-top: 30px;
    padding: 12px 30px;
    background: #007bff;
    color: #fff;
    text-decoration: none;
    border-radius: 6px;
    transition: 0.3s ease;
}

.btn:hover {
    background: #0056b3;
}

@media (max-width: 768px) {
    .container {
        padding: 40px 25px;
    }

    h1 {
        font-size: 26px;
    }

    p {
        font-size: 16px;
    }
}