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