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