body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}
div {
    width: 80%;
    margin: 20px auto;
    background: white;
    padding: 20px;
    box-shadow: 0 0 10px #ccc;
}
input[type=text], input[type=password], textarea {
    width: 100%;
    padding: 8px;
    margin: 5px 0 22px 0;
    display: inline-block;
    border: none;
    background: #f1f1f1;
}
input[type=submit] {
    background-color: #4CAF50;
    color: white;
    padding: 14px 20px;
    border: none;
    cursor: pointer;
    width: 100%;
}
input[type=submit]:hover {
    opacity: 0.8;
}