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