html {
    background-color: #99ccff;
}

body {
    background-color: white;
    font-family: sans-serif;
    font-size: 110%;
    min-width: 400px;
    width: 60%;
    margin: 20px;
    padding: 20px;
    min-height: 100%;
    height: 100%;
}

div.option {
    border-bottom: 1px dotted gray;
    font-weight: bold;
    margin: 1em;
}

div.answer {
    font-size: 120%;
    font-weight: bold;
    margin-bottom: 2em;
}

div.correct {
    color: green;
}

div.wrong {
    color: red;
}

input[type=submit] {
    float: right;
}

form {
    margin-bottom: 3em;
}