problem with absolute positioning in firefox and chrome

Question

I don't understand why FF and Chrome render my page differently. Here's a screenie of it in

firefox:

and here's one in chrome

chrome:

fieldset has a relative position and the image has an absolute position.

here's the basic structure:

<fieldset class="passenger-info">
  <legend>Passenger 1</legend>
  <div class="remove-me">
    <img src="/images/delete-icon-sm.png" />
  </div>
</fieldset>

basically the image is declared right after the legend.

here's the css for fieldset:

.passenger-info {
  background:none repeat scroll 0 0 #F2F2F2;
  border:1px solid #9D240F;
  display:inline;
  float:left;
  margin-bottom:10px;
  margin-right:10px;
  padding:3px 10px;
  position:relative;
  width:350px;
}

and for the remove-me image:

.remove-me {
  border:1px solid red;
  position:absolute;
  right:0;
  top:0;
}

it's totally weird. I tried putting the fieldset padding out, and the image moves up a little, but still not at the corner.

This post shows that FF does indeed have problems with rendering fieldsets.

http://www.codingforums.com/showthread.php?t=132624

Is there a better way of doing a fix without using a browser specific hack?

Answer 1

It appears that Firefox has an invisible padding or margin that places the element at the top right of the text space. Chrome is placing the element at the top right of the fieldset element outside of the flow of text.

One thing you could do is add a div wrapper and then absolutely position the element in the top right of the wrapper so that it lays over the corner of the fieldset.

Answer 2

It appears that the .remove-me element might have margin. Make sure to to remove that prior to adding absolute-positioning to items.

For precise results, you should always do a 'reset' in your CSS. This means removing margin/padding from every element.

A simple reset:

* { margin: 0; padding: 0px; }

Put that at the top of your CSS.