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