.top-des{display:flex;flex-direction:column;flex:1 0 auto;box-sizing:border-box;padding:2rem;width:100%;max-width:570px;margin:0 auto;position:relative;transition:.15s ease-out;border-radius:6px;border:1px solid #d1d3da;background:#fff;}.top-des::after{width:calc(100% - 1.6rem);left:1.6rem;top:.8rem;content:"";display:block;background:repeating-linear-gradient(315deg,#87888d,#fff .1rem,#fff .35rem);position:absolute;height:100%;z-index:-1;}