body {
    background-color: lightblue;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
form {
    width: 300px;
    margin: auto;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 4px;
    background: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}