Element button pseudo-element :before generated with padding 25px font-size 16px border 0px rgba(0,0,0,1) solid line-height 1 text-shadow 1px 1px 1px rgba(0,0,0,0.2) transition opacity 1 display block width 160px margin 0px position static box-sizing content-box font-weight normal float none overflow hidden height auto transform cursor default box-shadow 1px 1px 1px rgba(0,0,0,0.3) z-index auto background border-radius outline none