Had to add images on next post. First one marked on red show how it looks after browser update the second one is made on other browser.

Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac=Options) key, and then starting Firefox. A small dialog should appear. Click Start In Safe Mode (not Refresh).

Is the problem still there?

Start your Computer in safe mode with networking. Then start Firefox. Try Safe websites. Is the problem still there?

Starting The Computer In Safe Mode;
Free Online Encyclopedia

Started firefox in safe mode, still the same problem. Before update all worked fine.

This is an obscure problem. Firefox historically ignored style rules that were specific to other browsers. However, Firefox 49 now applies some style rules that start with the -webkit prefix. (-webkit-prefixed rules are used in Chrome and Safari.)

This is great for some sites that previously didn't look as good in Firefox, but a disaster for CSGOSell and possibly others because its little animation to slide open that list for Chrome/Safari doesn't work in Firefox (it only opens the first row).

To set Firefox to return to the old approach of ignoring style rules that have a -webkit prefix, you can do this:

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful.

(2) In the search box above the list, type or paste webk and pause while the list is filtered

(3) Double-click the layout.css.prefixes.webkit preference to switch the value from true to false

Unfortunately, I'm not aware of any site-specific approach, it seems to be all or nothing on this one for now.

Problem solved, much thanks!

Hello,

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