.intro-area .d-box-title{background-image:url(../images/intro/intro_title.png)}.intro-overview-box{padding-bottom:calc(2610 / 1860 * 100% + 80px);font-size:0;background-image:url(../images/intro/intro.png);background-repeat:no-repeat;background-size:100% auto}@media only screen and (max-width : 600px){.intro-overview-box{width:calc(100% - 20px);padding-bottom:calc(2610 / 1860 * (100% - 20px) + 40px);margin:0 auto}}