This is down to how you renamed the boxes on your page, but didn’t change the selector in your CSS. In your working page, you have the following style:
#myTable td { border-bottom: 1px solid #ccc }
You have another with the same selector (the part at the beginning, outside of the curly-braces) for your padding. They rely on the box around the table having the ID myTable. In Freeway, the ID is set using the Title field in the Inspector while the box in question is selected (handles showing at the corners and sides).
In your second example, the nearest box ancestor to the table has the ID TafifsTableWrap. If you change it to myTable, it will work again. Likewise, if you change all instances of #myTable to #TafifsTableWrap in your CSS, it will also work again.