Limitations (as of version 1.0beta) Values for column-width and column-gap must be given in pixels. The implementation relies on a light javascript css parsers. Avoid complex css structures (like cascading rules). This is ok: .article { column-count: 3; column-gap: 20px; } This is likely to break: #somearticleid { column-count: 3; } .different_selector { column-gap: 20px; } Also, for n