By default, the page design plugin uses the column width from the table. When you modify the column width in table, the relevant column in the page design plugin also becomes wider.
But you can modify the column width in the page design plugin independently from the column width in the table. When you do that, the custom widths are hard-coded in the Page Design template. Once you have done that, you can change the column width in the base all you want, the column widths in the page design do not change anymore.
Do it like thousands of other people who have used SeaTable to develop powerful processes and get their ideas and tasks done more efficiently.