CSS & JS : 自定义页面Loading加载

CSS

<style>
.mask{
     
     
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 998;
    background-color: rgba(0,0,0,.2);
    display: table;
}