Stacking DIVs on top of each other?

Question

Is it possible to stack up multiple DIVs like:

&l         


        
                      

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Answer 1

style="position:absolute"

Answer 2

Position the outer div however you want, then position the inner divs using absolute. They'll all stack up.

.inner {
  position: absolute;
}

<div class="outer">
   <div class="inner">1</div>
   <div class="inner">2</div>
   <div class="inner">3</div>
   <div class="inner">4</div>
</div>

Answer 3

I positioned the divs slightly offset, so that you can see it at work.
HTML

<div class="outer">
  <div class="bot">BOT</div>
  <div class="top">TOP</div>
</div>

CSS

.outer {
  position: relative;
  margin-top: 20px;
}

.top {
  position: absolute;
  margin-top: -10px;
  background-color: green;
}

.bot {
  position: absolute;
  background-color: yellow;
}

https://codepen.io/anon/pen/EXxKzP