| <!DOCTYPE html> | |
| <p>There should be a blue <em>square</em> below.</p> | |
| <div style="-webkit-columns:3; columns:3; -webkit-column-gap:0; column-gap:0; width:300px;"> | |
| | |
| <div style="-webkit-column-break-before:always; break-before:column; height:400px; background:blue;"></div> | |
| <div style="-webkit-column-span:all; column-span:all;"> </div> | |
| </div> |