#h1 {
    font-family: Helvetica, sans-serif;
}
#legend {
    max-height: 160px;
}

#map {
    height: 500px;
}

.legend-key {
    display: inline-block;
    border-radius: 20%;
    width: 10px;
    height: 10px;
    margin-right: 5px;
}