.contact_box {
    margin: 40px 0;
}

.contact_box::after {
    content: '';
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
}

.contact_l {
    float: left;
    width: 50%;
    padding: 30px 40px;
    box-sizing: border-box;
}

.contact_l_h {
    font-size: 24px;
    color: #333;
    font-weight: bold;
    line-height: 1.8em;
}

.map_r {
    float: left;
    padding: 10px;
    width: 580px;
    height: 360px;
}

.message_box {
    margin: 20px 0 50px;
}

.message_h {
    color: #333;
    font-size: 24px;
    line-height: 1.8em;
    padding-left: 10px;
    margin-bottom: 10px;
}


@media screen and (max-width:960px) {
    .contact_l {
        float: none;
        width: 100%;
    }

    .map_r {
        float: none;
        width: 100%;
        padding: 0;
    }
}