body {
    font-family: Arial;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
    text-align: center;
}

.box {
    background: #fff;
    color: #333;
    width: 320px;
    margin: 80px auto;
    padding: 20px;
    border-radius: 12px;
}

input, button {
    width: 90%;
    padding: 10px;
    margin: 10px;
    border-radius: 6px;
    border: none;
}

button {
    background: #667eea;
    color: #fff;
    cursor: pointer;
}