Okay, just forget about it, I found the problem : )
When I looked at the HTML code, I saw :
<table style=”width: 757px; height: 830px;” >
So even if I changed the sizes of the columns individually, since the table had a maximal size, it didn’t work.
I just deleted the sizes for the table and it works.
Now I have another problem :
The alignments are not respected in the real page.
For example here is my HTML code for the second cell in the first column :
<td rowspan=”3″ valign=”middle”> LUNDI</td>
But no center alignment for the text in the page (https://www.salsa-brest.fr/denem/)
Any idea ?