Element block pseudo-element :before generated with float none z-index auto width 10px font-size 16px box-sizing content-box text-shadow 1px 1px 0px rgba(255,255,255,0.2) border-radius font-weight normal margin 0px padding 5px line-height 1 transition height auto background position static outline none opacity 1 display block cursor default transform overflow hidden border 0px rgba(0,0,0,1) solid box-shadow