This is caused by using CSS grid with "minmax(auto, 57rem)" and an overflowing table. It can be fixed with adding "safe" to "justify-content: safe center" that is defined on main.
https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/P...
https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/P...
It took until 2023 to support nesting, something that was so obvious that preprocessors have had it since at least 2006.