Question

I need to create a DIV where width=height, and height=100% of the viewport (which, obviously, is variable).

In other words, a perfectly square DIV that calculates it’s dimensions based on the height of the viewport. Elements within that DIV will take their dimensions as percentages of the parent-DIV’s height & width.

It seems to me like this should be simple to do in CSS, but I’ve gotten stuck with it! Any pointers would be much appreciated.

Answer 1

You can do this with jquery (or pure javascript if you prefer).

With jquery:

<div id="square">
</div>

$(document).ready(function(){
  var height = $(window).height();
  $('#square').css('height', height);
  $('#square').css('width', height);
});