body {
    margin-top: 6em;
}

nav {
    background-color: #005eb9;
}

h1, h2 {
    margin-bottom: 1.5rem;
}

h1, h5 {
    text-align: center;
}

img {
    max-width: 90%;
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 1.5em;
}

table {
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 2em;
}

td {
    padding-right: 2em;
}

iframe {
    max-width: 100%;
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 2em;
}

main ul {
    margin-top: -0.5em;
    margin-bottom: 1em;
}

embed {
    aspect-ratio: 2/3;
    width: 100%;
}