The title field and all editor is full width. I don't know where to start looking. Any clue is welcome.

All plugins deactivated.

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  • "All plugins deactivated" - have you tried switching to a default theme like 2021?
    – Sally CJ
    Mar 28, 2022 at 15:49
  • 3
    looks like your theme doesn't provide an editor stylesheet that gives the main content area a maximum width, or, you have a very big content width set that's much wider than your computers screen, you should contact the authors of your theme
    – Tom J Nowell
    Mar 28, 2022 at 15:51
  • 1
    Correct. It is a theme issue, sorry. Is the default behavior of Sage 10 starter theme. I 'll answer the question as soon I learn how to do it exactly. It has to do with defining containers in theme.json
    – aitor
    Mar 28, 2022 at 19:01

1 Answer 1


As theme handbook said, I have to define the containers in the theme.json

    "version": 2,
    "settings": {
        "layout": {
            "contentSize": "840px",
            "wideSize": "1100px"
  • 1
    Thanks for sharing - that's quite helpful 👍 :)
    – Sally CJ
    Mar 29, 2022 at 8:59

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