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