body {
    font-family: Arial, sans-serif;
    background: #f4f4f4;
    text-align: center;
    margin-top: 100px;
}

.container {
    background: white;
    width: 600px;
    margin: auto;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1 {
    color: #007acc;
}

button {
    padding: 10px 20px;
    cursor: pointer;
}