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