html - Overlapping circles in CSS with 1 div

Question

I'm looking to create this overlapping circles shape in CSS:

Basically, just stacked circles. I've looked around, and all solutions I see include using multiple div elements for this effect. However, can't this be done with a single div, using CSS3? I looked at how it could be easily done, and figured that, if all colours are the same, you'd have a pill shape like this:

http://jsfiddle.net/5wytm0r4/

 #circles {
   background-color: red;
   width: 130px;
   height: 100px;
   border-radius: 50px;
 }

<div id="circles"></div>

Answer 1

With CSS box-shadows

You can use multiple box-shadows with several colours on a rounded div. They need to be seperated by a comma:

#circles {
  background-color: red;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  box-shadow: 10px 0 0 -2px #f8ff00,
              20px 0 0 -4px #009901,
              30px 0 0 -6px #3531ff;
}

<div id="circles"></div>