Element button pseudo-element :before generated with transition font-size 16px display block line-height 1 width 160px border 36px rgba(0,0,0,1) solid margin 0px box-sizing content-box z-index auto background padding auto overflow hidden border-radius box-shadow 1px 1px 1px rgba(0,0,0,0.3) font-weight normal cursor default transform height auto float none position static text-shadow 1px 1px 1px rgba(0,0,0,0.2)