Element block pseudo-element :before generated with overflow hidden padding 20px z-index auto margin 0px height auto line-height 1 border 0px rgba(0,0,0,1) solid float none text-shadow 0px 0px 0px rgba(0,0,0,0.2) width 160px display block background border-radius box-sizing content-box font-weight normal font-size 16px transform box-shadow 0px 0px 0px rgba(255,0,0,1) position static cursor default transition