How to get a lager page width in both editing mode and preview mode?

[GLight]

Oh, I find a solution at:

A fix for ugly long lines in fullscreen v2

Edit: rsdimitrov pointed out you can’t just use .view-content but have to specify markdown-source-view & markdown-preview-view. Get THIS when in full screen? [1] Hate it? Want THIS instead? [2] Then add THIS to your obsidian.css file: .markdown-source-view, .markdown-preview-view { max-width: 700px; margin: auto; } Edit: rsdimitrov pointed out you can’t just use .view-content but have to specify markdown-source-view & markdown-preview-view.

the code looks like the following:

.markdown-source-view, .markdown-preview-view {
max-width: 900px;
margin: auto;
}