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