body {
    font-family: sans-serif;
    line-height: 1.5;
    margin: 1em;
    color: #111;
    background-color: #fff;
}

h1 { font-size: 2em; }
a { color: blue; text-decoration: underline; }

main {
    margin: 0px 100px 0px 100px;
}
.questions dt {
    font-weight: bold;
}
span.explanation {
    font-style: italic;
    font-weight: lighter;
}
.field {
    margin: 1em;
}