Element block pseudo-element :before generated with line-height 1 transition border 0px rgba(0,0,0,1) solid z-index auto position static text-shadow 1px 1px 1px rgba(0,0,0,0.2) display block font-size 16px float none box-sizing content-box padding 10px height 20px outline none font-weight normal width 20px margin 10px opacity 1 cursor default box-shadow 1px 1px 1px rgba(0,0,0,0.3) overflow hidden border-radius transform background