header {
    padding-bottom: 0.833em;
    border-bottom: 1px solid;
    margin-bottom: 0.833em;
}


header a {
    text-decoration: none;
    color: inherit;
}


#discoveryRateGraph {
    width: calc(540px * 1.618);
    height: 540px;
    margin-left: auto;
    margin-right: auto;
    border-style: solid;
    border-width: 1px;
}


#options {
    margin-bottom: 2em;
}

#options #n {
    width: 3em;
}