<div class="box1">box1</div>
<div class="box2">box2</div>
<div class="box3">box3</div>

.box1{
  background-color: red;
  width: 100px;
  height: 100px;
  margin: 10px;
  text-align: center;
  line-height: 100px;
}

.box2{
  visibility:hidden;
  background-color: blue;
  width: 100px;
  height: 100px;
  margin: 10px;
  text-align: center;
  line-height: 100px;
}

.box3{
  background-color: yellow;
  width: 100px;
  height: 100px;
  margin: 10px;
  text-align: center;
  line-height: 100px;
}

External CSS

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External JavaScript

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