#back {
    padding: 1rem 0;
}

#back a {
    display: inline-block;
    background: transparent none;
    color: #fff;
    font: inherit;
    font-weight: bold;
    text-decoration: none;
    padding: 0.2rem 0.7rem 0.3rem;
    border: none;
    border-radius: 0.4rem;
}

#back a:hover,
#back a:active {
    background: #fff;
    color: #2e3356;
}

#back a::before {
    content: '<';
}