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