body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: white;
    margin: 1em auto;
    width: 450px;
    padding: 0 1em 0 2em;
    border: 1px solid black;
    border-radius: 1em;
}
h1 {
    color: cornflowerblue;
}
div {
    margin-bottom: 1em;
}
label {
    display: inline-block;
    width: 6em;
}
input {
    height: 1.5em;
    width: 20em;
    border: 1px solid black;
    border-radius: 0.25em;
}
button {
    height: 2em;
    width: 10em;
    border: 1px solid black;
    border-radius: 0.25em;
}
#message {
    font-weight: bold;
    color: red;
    width: auto;
}