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