Default paragraphs in this page have yellow background. In any of the following test cases a blue background is set with a special (hack) rule. When the background is blue, the hack is applied.
Note: 'All' IE5+/Win, Op6+, Moz, IE5/Mac, Saf

IE5/Mac only
/**//*/ selector { property: value; } /**/

Troubleshooting some nasty Safari malware Jason Snell's sister ran into a persnickety pop-up asking her to call an 800 number. Instead she called family tech support! Supported CSS Rules. This chapter describes selected CSS rules supported by Safari. This is not intended to be an exhaustive list. The CSS rules described here are limited to rules that are either new or are not broadly supported by other browsers (including some specific to WebKit). Chrome and Safari Browser CSS Hacks. Here are the most common CSS hack for Chrome Browser and different versions. You can also check hack for Firefox and Internet Explore/Edge.

Apr 07, 2013  c’mon, if you make professional sites the first thing you learn is that you will have a mainstream CSS, minor fixes for Chrome, some fix for Safari (or Safari Mac) and a load of fixes to support IE6 (still used in China guys), IE7, then odd stuff for IE8, exceptions IE9, just to discover that on IE10 there’s other problems. Mar 28, 2007  Hiren, all styles after the # sign are ignored by Safari versions less than 3, so simply group all of your Safari only rules above the first # and you can override as many classes as you want. Jason and Chaz, you're correct—the hack no longer works in Safari 3. I added a disclaimer to the top of the post to make this more apparent. Jan 20, 2005  Provided IE/Mac users can access all areas of the site, this is seen as a suitable way to do things. To hide a command using the IE/Mac CSS hack is. The Grid system is, can I say inconsistent? In Mac Safari. I tested on rMBP and MBA This is the same case with Bootstrap 2.x as well. I am not sure if there's a Safar-Specific fix for it, as it would appear to be a Safari Problem.

All except IE5/Mac
/**/ selector { property: value; } /**/

IE6- only
/**/ * html selector { property: value; } /**/

IE5.5- only
selector { property: value; property: normal-value; }

Css Hack For Mac Safari Only

IE7 standard only
*:first-child+html selector { property: value; }

All except IE6-
html>body selector { property: value; }

IE6+ quirks and IE5 (= all IE/Win quirks) only
* html selector { property /**/: value; }

All except IE6 standards
selector { property /**/: value; }

All except IE5.0
selector { property/**/: value; }

All except IE5.5
selector { property: /**/value; }

Op < 9.5 only
@media all and (min-width: 0px) { html:first-child selector { property: value; } }

Css Target Safari

Safari 3 only
selector:not(:root:root) { property: value; }

Css Safari Only

Safari only
@media all and (-webkit-min-device-pixel-ratio: 0) { selector { property: value; } }

Gecko (1.8+) only
@-moz-document url-prefix() { selector { property: value; } }