.col1Contents {
    width: 1240px;
    margin: 0 auto;
}

.sectionBlock {
    width: 1240px;
}
.btn_blue_tb a:hover {
    color: #fff;
    text-decoration: none;
    opacity: 0.7;
}

@media only screen and (max-width: 768px){
    .col1Contents {
        width: 100%;
    }
    .sectionBlock {
        width: 100%;
    }
    .catalog__table { 
        width: 100%;
        overflow-x: scroll;
    }
    .tblMod01 {
        width: 1240px;
    }
}