We have a couple of similar pages in our web app where each shows merely a data grid for tabular data. They differ only in the type of data to be shown, i.e. with different number and kind of columns.
We have discussed the following options without any conclusion yet.
Make all grids full width no matter how many columns there are.
Make grids only wide enough for their number of present columns.
a) Narrow grids are horizontally centered.
b) Narrow grids are left-aligned.
Which one is better suited for the user?