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