.listing > span:after {
    content: " _";

}

body {
    display: flex;
    flex-flow: column nowrap;
    max-width: 60rem;
    min-height: 100vh;
    gap: 1rem;
    margin: 0;
}

nav {
    height: 2rem;
    text-align: center;
    line-height: 2rem;
}

nav img {
    height: 2rem;
}

nav > ul {
    display: flex;
    flex-flow: row nowrap;
    overflow-x: auto;
    gap: 2rem;
    justify-content: space-evenly;
    list-style: none;
    padding-left: 0;
}

main {
    flex-grow: 1;
    padding: 0 2rem;
}

footer {
    padding: 1rem 2rem;
}