@media (min-width:401px){#mask_img{}.img_mask{position:fixed;width:100%;height:100%;top:0;left:0;background:rgba(0,0,0,0.3);z-index:2;display:none}.img_mask>span{max-height:100%;width:auto;display:block;overflow-y:scroll}.img_mask img{display:block;margin:4% auto;max-height:90%;width:auto}.img_mask>a{display:none}.open_mask{display:block!important}.img_mask:hover,.img_mask img:hover{opacity:1!important}}@media (max-width:400px){#mask_img{}.img_mask{position:fixed;width:320px;height:100%;top:0;left:0;background:rgba(0,0,0,0.3);z-index:2;display:none;text-align:center}.img_mask>span{max-width:310px;height:auto;display:inline}.img_mask img{display:block;margin:auto;max-height:90%;width:auto}.img_mask>a{color:#fff;font-weight:bold;font-size:120%;z-index:1}.open_mask{display:block!important}.img_mask:hover,.img_mask img:hover{opacity:1!important}}