body {
    font-family: 'Times New Roman', Times, serif;
}
#main {
    margin-top: 3rem;
    margin-left: 4rem;
    width: 60%;
}
@media screen and (max-width: 640px) {
    #main {
        margin: 2rem;
        width: initial;
    }
    footer {
        margin-left: 2rem;
    }
}
a {
    background-color: white;
    color: black;
}
ul {
    list-style: none;
}
footer {
    margin-left: 4rem;
    margin-top: 2rem;
    font-size: 80%;
}