Element button pseudo-element :before generated with background width auto outline none overflow visible font-weight normal border 10px hsl(0, 7%, 37%) solid margin 20px float none opacity 1 z-index auto height auto display inline-block border-radius box-shadow 2px 2px 2px rgba(0,0,0,0.2) line-height normal transition transform cursor default text-shadow 1px 1px 0px rgba(255,255,255,0.66) padding 20px position static box-sizing content-box font-size 16px