Overflow: hidden in firefox 3.6

Question

I made a form script so that I can always use that if I need a form, but I noticed that when I set for a field the property on overflow hidden it still is visible in Firefox (tested in 3.6).

I saw that still more than 5% of the users look in FF 3.6 so I need to fix it.
I googled it for it but all the fixes they said didn't help me with my bug...

Link to jsFiddle I made a part on the form in JS fiddle, if you can test in chrome, IE 6+ and then FF 3.6 you see the differences (when you click on the checkbox the hidden content should show).

Please can someone help,

Sander

Answer 1

It looks like it is a Mozilla bug that has been going on for over 7 years (reported 2004-09-22):

https://bugzilla.mozilla.org/show_bug.cgi?id=261037

overflow is always treated as overflow: visible on a fieldset when it is assigned a fixed height or width (no matter what you set it as).

You could either use display: none to hide the fieldset content or if you want to carry on using the overflow:hidden approach then you could either change the element from fieldset to div or nest fieldset within another div with the property overflow: hidden .