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