A percentual width of an abolutely positioned element should be calculated relative to the containing block (the body, if there is no other absolutely positioned element. Unfortunately Explorer (Win and Mac) and Opera calculate the width relative to a static block that contains the HTML for the absolute element.

Test page Workaround is not included
Reported by: G�rard Talbot.

Using firefox in Windows and Linux (same version) i get a problem where i cannot specify a shadow underneath text to be consistent, because the margin/padding differences are throwing me out - i have set paddings and margins of all elements to 0 - except the one i wish to change... it's highly annoying!

Test page Workaround is not included
Reported by: Tim.

(ppk disclaimer: I don't have a Linux test box, so I couldn't check this bug report)

Text in a div with a background color followed by a div which floats to the left and another which is clear on the left is invisible.

Test page Workaround is included
Reported by: Justin Patrin.

A valid way to position an HTML element with the absolute type is by defining only the left offset, right offset, top offset, and bottom offset from parent. Opera and Firefox pass. IE 6 does not.

Test page Workaround is not included
Reported by: Peter Siewert.

window.opener.closed works in IE 6 but not in Mozilla or Opera due to a known bug. Also, in IE 5 window.opener.closed DOES NOT work correctly due to another known bug. I also have a longer writeup in my blog.

Test page Workaround is included
Reported by: Yakov Shafranovich.

In Opera 8.0, links lose their default underlining style when text-align is applied to them.

Test page Workaround is included
Reported by: Chris Hester.

When an empty ALT attribute is used on an IMG tag, Opera 8.0 uses diagonal borders around the image - it draws a diamond instead of a rectangle.

Test page Workaround is not included
Reported by: Chris Hester.

In Internet Explorer you won't be able to view all of an absolutely positioned div because IE doesn't 'create' a scrollbar.

Test page Workaround is included
Reported by: Mark Janssen.

Explorer Mac and Safari also trigger the onload event when you use an internal anchor to jump to. The jump is executed time and again.

(ppknote: This bug is closely related to Setting location.hash to the same value twice causes reload, but it's not quite the same.)

Test page Workaround is not included
Reported by: Benjamin Eric Morin.