.corner-style .card{position:relative}.corner-style .card:before{content:"";position:absolute;width:3vw;height:3vw;top:0;left:0;background-color:#ed1c22;border-top-left-radius:3px;border-top-right-radius:0px;border-bottom-right-radius:3px;border-bottom-left-radius:0px;z-index:0}.corner-style .card .image{z-index:1}