.page-content {
    float: none;
    min-height: 300px;
    width: 100%;
    background:url("../images/CONTACT_WEB.jpg") center top / cover no-repeat fixed transparent;
}
.column_23 {
    width: 100%;
    min-height: 100px;
    padding-left:15px;
    padding-right:15px;
    margin-left:auto;
    margin-right:auto;
    background-color:rgba(255, 255, 255, 0.9);
}
@media only screen and (min-width : 768px) {
    .page-content {
        min-height: 700px;
        width: 100%;
    }
    .column_23 {
        float: left;
        min-height: 700px;
        width: 100%;
    }
}
@media only screen and (min-width : 1024px) {
    .column_23 {
        float: left;
        width: 100%;
    }
}