css
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body {
    background-color: #f4f4f4;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    text-align: center;
}

.container {
    padding: 50px;
    margin-top: 100px;
    background-color: white;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}