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