html, body {
    height: 100%;
    width: 100%;
    margin: 0;
    padding: 0;
}

body {
    display: flex;
    flex-direction: column;
}

.flex-grow {
    flex-grow: 1
}

ul {
    display: flex;
    flex-direction: row;
    padding: 0;
}

li {
    display: block;
    padding: 0 5vw 0 5vw;
}

a {
    text-decoration: none;
    padding: 0.25em;
    border-radius: 0.25em;
}

a:hover {
    background-color: gray;
}

#index-content {
    display: flex;
    flex-direction: row;
}

@media only screen and (orientation:portrait) {
    ul {
        flex-direction: column;
    }

    li {
        padding: 3em 0 0 0;
    }

    .side-pad {
        display: none;
    }

    .top-pad {
        flex-grow: 1;
    }

    .bottom-pad {
        flex-grow: 2;
    }

    #inner {
        padding-left: 10vw;
    }
}