@media only screen and (max-width: 991px) {

    section { padding: 30px 0 15px 0; }

    h2 { 
        font-size: 150%;
        padding: 0 4%;
    }

    #contact-form {
        width: 90%;
        font-size: 90%;
    }

    #contact-form .span-1-of-3 { margin-bottom: 1%; }
    #contact-form .span-2-of-3 { margin-bottom: 4%; }

    .phone-box { width: 90%; }

}