How to put div2 in the middle of div1_html/css_WEB-ITnose

How to make div2 in the horizontal middle of div1

Reply to discussion (solution)

You can use js to dynamically calculate the width and height of the two and then divide by 2 to set The padding of div1

<style>div{margin:0;padding:0}#div1{position:relative;height:200px;width:200px;background-color:red}#div2{position:absolute;height:100px;width:100px;background-color:yellow;top:50%;margin-top:-50px;left:50%;margin-left:-50px}</style><div id="div1">	<div id="div2">	</div></div>

<style>div{margin:0;padding:0}#div1{position:relative;height:200px;width:200px;background-color:red}#div2{position:absolute;height:100px;width:100px;background-color:yellow;top:50%;margin-top:-50px;left:50%;margin-left:-50px}</style><div id="div1">	<div id="div2">	</div></div>

The width of my div1 extends with the span of the browser

The extension is To extend, you can just remove the width attribute of div1
As long as the width of div2 is fixed.

<style>div{margin:0;padding:0}#div1{position:relative;height:200px;width:200px;background-color:red}#div2{position:absolute;height:100px;width:100px;background-color:yellow;top:50%;margin-top:-50px;left:50%;margin-left:-50px}</style><div id="div1">	<div id="div2">	</div></div>

My div1 width extends with the span of the browser

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