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<!DOCTYPE html>
<html>
<head>
<style>
body {
  background-color:#E7E9EB;
}
#myDIV {
  height:300px;
  background-color:#FFFFFF;
}
span{ 
  background:lightblue;
  visibility: hidden;
}
</style>
</head>
<body>
<h1>The visibility property</h1>
<div id="myDIV">
In this paragraph, the <span>blue span</span> change the visibility value
</div>
</body>
</html>