body {
    font-family: Arial;
    background: #f4f4f4;
    padding: 20px;
}
form {
    background: white;
    padding: 20px;
    border-radius: 10px;
    width: 300px;
    margin: auto;
}
input, button {
    display: block;
    width: 100%;
    margin: 10px 0;
    padding: 10px;
}