main {
    margin: 3em;
}

h1 {
    color: #555;
    border-bottom: 3px solid #555;
    border-left: 5px solid #555;
}

dt {
    font-weight: bold;
    margin-top: 1em;
}

h1 img {
    height: 1em;
    padding-right: 0.2em;
    padding-left: 0.2em;
}