#main .title {
    font-size: 5rem;
    font-weight: bold; 
    border: solid 10px #ffffff; 
    border-radius: 5px; 
    padding: 0px 16px;
    display: inline-block;
}

@media (min-width: 420px) {
    #main .title {
        font-size: 7rem;
    }
}

#main .subtitle span {
    display: block;
    font-size: 1.5rem;
    line-height: 2rem;
    letter-spacing: 0.75px;
}