纸叠效果会员登录界面模板是一款某网盘网站使用的用户登录页面模板，纯CSS3打造，蓝色背景，干净简洁，登录表单有简单验证功能，页面下半部分云层动态移动效果。-Paper stack effect SIGN interface template is a user login page template disc Mouwang site uses pure CSS3 to create a blue background, clean and simple, simple login form validation, the lower half of the page dynamically move sub-cloud effects.