ul,li,ol{
	text-decoration: none;
	list-style: none;
}
*{
	margin: 0;
	padding: 0;
}

#usage-usage-page .ratio-box.ratio-banner::before {
    padding-top: 12%;
}
#usage-usage-page .ratio-content {
    background-position: 0 -510px;
}

#usage-usage-page .item-wrap{
    padding: 100px;
}

#usage-usage-page .item-wrap .ratio-box:before{
    padding-top: 30%;
}

#usage-usage-page .item-wrap .row{
    width: 1200px;
    margin: 0 auto;
}

#usage-usage-page .item-wrap .row .col-md-6{
    display: flex;
    justify-content: center;
}

#usage-usage-page .item-wrap .row .bg{
    width: 600px;
    height: 400px;
    margin: 0;
    padding: 0;
}