.section-contact {
    max-width:450px;
    margin:auto;
    text-align:center;
}
.section-contact input[type=text],
.section-contact textarea {
    display:block;
    width:100%;
    height:40px;
    border:0;
    background:transparent;
    border-bottom:1px solid #CCC;
    outline:0;
    margin-top:10px;
}
.section-contact textarea {
    height:100px;
    resize:none;
}
.section-contact--split {
    display:flex;
}
.section-contact--split input:first-child {
    margin-right:20px;
}

/* RESPONSIVIDADE */

@media (max-width: 480px) {
    .section-contact--split {
        flex-direction: column;
    }

    .section-contact--split input:first-child {
        margin-right: 0;
        margin-bottom: 15px;
    }

    .section-contact input[type=text],
    .section-contact textarea {
        height: 35px;
        font-size: 14px;
    }

    .section-contact textarea {
        height: 80px;
    }

    .section-contact {
        padding: 0 10px;
    }
}