<div>
  <p>123</p>
</div>
<p>Some text is here</p>
<p>Some text is here</p>
<p>Some text is here</p>
<p>Some text is here</p><p>Some text is here</p><p>Some text is here</p>
div{
  width:100px;
  height:100px;
  background:red;
  position:fixed;
  top:50px;
  left:100px;
}

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