Element block pseudo-element :before generated with margin 0px box-sizing content-box line-height 1 border-radius font-weight normal z-index auto width 160px border 0px rgba(0,0,0,1) solid background cursor default transition box-shadow 1px 1px 1px rgba(0,0,0,0.3) text-shadow 1px 1px 1px rgba(0,0,0,0.2) overflow hidden float none transform position static display block height auto font-size 16px padding 20px