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