| <!DOCTYPE html> | |
| <p>Test that an empty spanner B between spanners A and C prevents margins on A and C from collapsing.</p> | |
| <p>There should be a blue square below.</p> | |
| <div style="-webkit-columns:3; width:10em; background:blue;"> | |
| <div id="a" style="-webkit-column-span:all; margin-bottom:5em; background:white;"></div> | |
| <div id="b" style="-webkit-column-span:all;"></div> | |
| <div id="c" style="-webkit-column-span:all; margin-top:5em; background:white;"></div> | |
| </div> |