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