.main_img{width:100%;background:none;color:inherit;text-align:left;height:auto;margin-bottom:10px;padding:0}@media screen and (min-width: 992px){.main_img{background:url(/images/bg.jpg) no-repeat center center;background-size:cover;padding:20px 0}}.main_img__mv{display:block;width:100%;height:auto}