.at-contactForm fieldset {
    margin: 0;
}

.at-contactForm textarea {
    width: 100%;
    height: 18em;
}

.at-contactForm .proFormText {
    width: 100%;
}

@media screen and (min-width: 650px) {
    .at-contactForm .Form {
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    }

    .at-contactForm fieldset {
        -ms-flex-preferred-size: 50%;
        flex-basis: 50%;
    }

    .at-contactForm fieldset:last-of-type {
        padding-left: 2em;
    }
}