Layoutgrid - max width

[Lasa]

Hi,
I have a question about best practice when making a responsive site.
If you have a a layoutgrid with 1 column and a textbox or image in it and you want it to be 1200 px wide and centered.
Is it best to put the max width on the layoutgrid and no max width on the textbox or image,
or the max width on the text or image and no width limitation on the layeroutgrid?
I've tried both and the result seems to be the same.

Lasa

[Pablo]

Is it best to put the max width on the layoutgrid and no max width on the textbox or image,

Correct

[Lasa]

Thank you!