.leave-mark{-webkit-clip-path:polygon(50% 0,100% 38%,82% 100%,18% 100%,0 38%);clip-path:polygon(50% 0,100% 38%,82% 100%,18% 100%,0 38%);background:#c03;background:linear-gradient(180deg,#c03,rgba(204,0,51,0));opacity:0;transition:all 2s;transform:rotate(2.28deg);position:absolute;z-index:999;width:100px;height:100px}