PAGE - Making the content wider for pages
By default, on content pages, Kagami enforces a maximum size of 700 pixels wide. This allows to focus the attention on the content but, in some cases, you may want the content to be wider.
Doing that is easy: just navigate to your page in the Shopify admin (like if you were to change the content). On the bottom left, you should find a box called "Templates". Click on the dropdown menu, and choose the template called "page.wide":
Make sure to save the page: your content will now be wider.