CSS: Keeping a div's height relative to its width [duplicate]

Answer 1

you can always set div width like this:

$('#div1').css("width", $('#div1').height()/6);

EDIT:

or you could use something like this:

/* Firefox */
width: -moz-calc(100% / 6);
/* WebKit */
width: -webkit-calc(100% / 6);
/* Opera */
width: -o-calc(100% / 6);
/* Standard */
width: calc(100% / 6);

This is only an example-..But it is impossible to get height of a div in a pixels in the css file..you need to use jquery for that

EDIT:

height 1/6 of a width

$('#div1').css("height", window.width()/6);