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              <div id="div1">10rela
	<div id="div2">5abso</div>
</div>
<div id="div3">20rela</div>
            
          
!
            
              #div1
	background-color: red
	border: 1px solid black
	width: 100px
	height: 100px

	position: relative
	z-index: 10

#div2
	background-color: orange
	border: 1px solid black
	width: 50px
	height: 50px

	position: absolute
	z-index: 5

	bottom: -25px

#div3
	background-color: green
	border: 1px solid black
	width: 100px
	height: 100px

	position: relative
	z-index: 20
            
          
!
999px
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