.sign-login-bg{position:relative;overflow:hidden}.sign-login-bg:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background-image:linear-gradient(hsla(0,0%,100%,.07) 1px,transparent 0),linear-gradient(90deg,hsla(0,0%,100%,.07) 1px,transparent 0);background-size:50px 50px;transform:perspective(1000px) rotateX(60deg) rotate(-45deg) scale(2);pointer-events:none;z-index:1}