Line 73 - 76: Corrects inline-block display not defined in IE6/7/8/9 & FF3 Line 77 - 78: Addresses styling for 'hidden' attribute not present in IE7/8/9, FF3, S4
Line 73 - 76: Corrects inline-block display not defined in IE6/7/8/9 & FF3
Line 77 - 78: Addresses styling for 'hidden' attribute not present in IE7/8/9, FF3, S4

According to Normalize.css(https://github.com/necolas/normalize.css)
F4-Group/nib,JulianWielga/stylus-less,tj/nib,ilovezy/nib,rstacruz/nib,F4-Group/nib,tj/nib,ilovezy/nib,seleckis/nib-pushup,ecmartinez/nib,ecmartinez/nib,seleckis/nib-pushup