.app_lay1{display:flex;}
.app_lay1 ul{float:left;margin-top:78px;}
.app_lay1 ul li{width: 100%;}
.app_lay1 .app_img1{margin-top:78px;position:relative;}
.app_lay1 .app_img1 .app_img1_dh1{position:absolute;bottom: 145px;left:0;width: 100%;height:80px;}

@media screen and (max-width: 850px) {
    .app_lay1,.app_lay1 ul{display:inline-block;}
    .app_lay1 ul,.app_lay1 .app_img1 img{width:100%;}
    .app_lay1 ul{margin: 0;}
    .app_lay1 .app_img1_dh1{bottom:0!important;}
}