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