title: Floating divs like desktop icons
body: <p>I have 15 Divs with 200px x 200px sized. I also having a container div which height set to 100%.</p>
  
  <p>I need to display the Divs vertically one by one and when its reached the end of the container  height, The following divs should display in the second column. </p>
  
  <p>I exactly need my divs to display like floating icons in desktop in PC.</p>
  
  <p>Please help me fix this.</p>