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