CSS circles without width or height? : Is this possible with pure CSS or not?

Question

I can turn a div into a circle like this:

.circle {
 background-color: rgba(0, 0139, 0139, 0.5);
 height: 200px;
 width: 200px;
 -moz-border-radius:50%;
 -we         


        

Answer 1

EDIT: I mistook your question. You'll need Javascript to assign the hight width to the highest value, as well as make sure your content is centered.

Here's how in this JSFiddle: http://jsfiddle.net/rgthree/K4Kpw/

    

        This is a line
        This is yet another line!
        Last Line!
    
​

CSS:

.circle {
    position:relative;
    background-color: rgba(0, 0139, 0139, 0.5);
    padding:10px;
    -moz-border-radius:50%;
    -webkit-border-radius: 50%;
    border-radius:50%;
}
.circle > div{
    position:absolute;
    top:50%;
    left:50%;
}

JQuery:

$('.circle > div').each(function(){
    var h, w, max;
    w = $(this).width();
    h = $(this).height();
    max = w > h ? w : h;
    $(this).css('margin-left', -parseInt(w/2,10));
    $(this).css('margin-top', -parseInt(h/2,10));
    $(this).parent().width(max);
    $(this).parent().height(max);
});​