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