Instructions for using the RE;FERI grid system.

This is a paragraph that spans 4 columns. To change the length, adjust the span value within the <cell>.

This paragraph starts in the 4th column and extends to the 7th column, making it 4 columns long. For this purpose, the span value was changed to 4-7.

Now, I've created a row that spans 3 columns. Since the previous row had only one column left, but this one spans 3 columns, it automatically shifted to the next row.