CSS issues ========== missing-top-border.html A bug in Opera 12.12: When displaying the heading, the top border is not shown. This only appears to happen when multi-columns are selected. no-spanned-heading.html A bug in Firefox 18.0.1: The column-span is not honoured, and the heading appears inline with the column. Additionally, the break-before is not honoured, and the second heading appears inline with the text. column-breaks.html A bug in Opera 12.12: 'break-before: column' doesn't work. Bugs in Firefox 18.0.1: 'break-before: always' and 'break-before: column' don't work. Bugs in Chrome 24.0.1312.52 m: 'break-before: always' and 'break-before: column' don't work. -- 19/01/2013 - created missing-top-border.html, no-spanned-heading.html, column-breaks.html.