- .container-mask{position:fixed;top:0;left:0;width:100%;height:100%;transition:all .3s}.mask-bg{height:100%;width:100%;background:#fff;z-index:99}.mask-content{display:inline-block;z-index:101;overflow:hidden}.center{display:flex;flex-direction:row;align-items:center;justify-content:center}
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