Default Width is very small

[orsenthil]

Describe the bug

context

I have this setup

extensions = ["myst_parser"]

templates_path = ['_templates']
exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
panels_add_bootstrap_css = False

html_theme = 'sphinx_book_theme'
html_static_path = ['_static']

And my index.md file is

# Test 1

## Test 2

### Test 3

* Checklist 1
* Checklist 2

problem

The default width is just small. How can I make sure that default width of the page is not collapsed.

Reproduce the bug

Build a sample test site using quickstart

List your environment

Sphinx==6.2.1
sphinx-book-theme==1.0.1
sphinxcontrib-applehelp==1.0.7
sphinxcontrib-devhelp==1.0.5
sphinxcontrib-htmlhelp==2.0.4
sphinxcontrib-jsmath==1.0.1
sphinxcontrib-qthelp==1.0.6
sphinxcontrib-serializinghtml==1.1.9

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[choldgraf]

I believe that this should be fixed in the upcoming Release Candidate - I'll close this but if the problem persists after upgrading to > 1.1, please re-ping here