Three columns
wider than 1080px · 200px · reading column · 280pxRight rail drops
769–1080px · --break-railsStacked, main first
up to 768px · --break-stack--container-max 1200px--container-wide 1360px--container-reading 680px
wider than 1080px · 200px · reading column · 280px769–1080px · --break-railsup to 768px · --break-stack--container-max 1200px--container-wide 1360px--container-reading 680px