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