.grid-background-box{position:absolute;width:100%;height:100%;top:0;overflow:hidden}.grid-background{position:absolute;top:-50px;left:-50px;width:calc(100% + 100px);height:calc(100% + 100px);overflow:hidden}.grid-pattern{width:300%;height:300%;background-color:#fff;background-image:linear-gradient(#f5f5f5 1px,transparent 1px),linear-gradient(90deg,#f5f5f5 1px,transparent 1px);background-size:45px 45px;background-position:0 0;animation:moveGrid 1.5s linear infinite}@keyframes moveGrid{0%{transform:translate(0,0)}100%{transform:translate(-45px,45px)}}.grid-background-guang-yun{position:absolute;top:-200px;left:-250px;width:calc(100% + 500px);height:calc(100% + 200px);background:radial-gradient(ellipse at center,transparent 0,transparent 50%,rgba(255,255,255,.1) 30%,rgba(255,255,255,.3) 40%,rgba(255,255,255,.8) 55%,#fff 100%),transparent}