Forum Discussion
Resize Column Width on SharePoint Page
BenHubbard You can change the number of columns in a section at any time, but for now, you cannot change the widths. In the coming months, new options for page layouts are coming and I am pretty sure you will be able to accomplish what you are talking about. You will want to watch for updates in the roadmap.
Not sure if you're still having this issue but a quick workaround I've found is to edit the column name to something longer, increasing the width. For example, if your column is titled 'example', the column will only be as wide as that. However, if you name it 'example_________________' it will increase the width to as long as how many underscores (or whatever you end up using) to be. You can quickly edit a column name by editing your list, clicking the drop-down on the relevant column name and clicking 'rename column'.