User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; es-ES; rv:1.9) Gecko/2008052906 Firefox/3.0 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; es-ES; rv:1.9) Gecko/2008052906 Firefox/3.0 The CSS max-width property doesn't work on images (always show original size). That property is important to limit the size of the images because all webs with that property not working are displayed broken (images, texts, sizes,...) if they contain some big images. Reproducible: Always Steps to Reproduce: 1. 2. 3.

The first case (table cell) is the one used at the URL. Just included the other two for comparison.

(correcting a typo)

Table cells and floats with width:auto are "shrink-to-fit": http://www.w3.org/TR/CSS21/visudet.html#float-width so it's a question of how max-width:100% should be treated when calculating the "preferred width". AFAICT, 10.2 says it's undefined: http://www.w3.org/TR/CSS21/visudet.html#the-width-property "If the containing block's width depends on this element's width, then the resulting layout is undefined in CSS 2.1." IE8 beta renders all the images in the testcase at their intrinsic width. Opera 9.50 shrinks the middle one, like Firefox 3. Webkit shrinks all three. I think Firefox 3 has the layout we want, but I'm not sure...

Dupe of bug 434230?

That bug has a bunch of table-specific stuff, while this one is also about floats... Might be two separate issues here.

Creates Webcompat issues with Blink https://bugzilla.mozilla.org/show_bug.cgi?id=441046 When inspecting in blink, the computed values have an additional property which is `width` For example when testing on Yahoo! on Mobile https://webcompat.com/issues/1218 In the list of computed values: # Firefox/Gecko no with defined max-width = 500px # Opera/Blink and Safari/iOS max-width = 100% width = 320px So we are definitely treating things differently here. I guess if we fix that bug we might end up with solving a lot of Web Compat issues with images too wide in layouts (table layout included).

This is fixed by bug 823483 Tested in Nightly.