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