CSS Reftest Reference

Run-in
headerStart of block. The run-in header should be inside the border around this block and there should be no space between the word "header" and the word "Start", other than the 5px vertical blue border. The border of the run-in must have no vertical part on the right in the first line and no vertical part on the left in the second line. The border of the run-in must not extend outside the border of the block.