#layout{z-index:1}.matrix-container{position:fixed;top:0;left:0;width:100%;height:100vh;z-index:0;opacity:0;transition:opacity .8s;overflow:hidden}.matrix-container.show{opacity:1}.matrix-container .mask{position:absolute;top:0;width:100%;left:0;height:100%;background:radial-gradient(circle,rgba(0,0,0,0) 0%,rgba(0,0,0,1) 77%)}