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