body {
    font-family: Arial, sans-serif;
    background-color: #e6f2ff;
    color: #333;
    text-align: center;
    margin: 0;
    padding: 0;
}
header {
    background-color: #3399ff;
    padding: 10px;
    color: white;
    text-align: left;
}
main {
    padding: 50px 20px;
}
input, button {
    padding: 10px;
    margin: 10px;
    font-size: 1em;
}