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