How to implement mask layer in vue.js

Vue.js method to implement mask layer: [div.popContainer {position: fixed;top: 0;left: 0;right: 0;bottom: 0;background: rgba(0, 0, 0 , 0.3);}].

The operating environment of this article: windows10 system, vue.js 2.9, thinkpad t480 computer.

vue implements a simple mask layer effect:

The specific code is as follows:

<div class=&#39;popContainer&#39;></div>


div.popContainer {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.3);
}

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