# Main 404
This guide describes setting up your store’s Main 404 section. Use the section to provide a message that’s displayed whenever a visitor follows a link to a store page that cannot be found. Refer to Shopify partners blog: How to craft the best 404 pages for your clients (opens new window).
The following video shows a main 404 section on a store’s 404 page. In the video, the Template size setting is adjusted to increase the size of the title text from 2XL to 5XL. Refer to Adjust text sizes.
For general guidance with modifying sections, refer to Sections overview.
# Set up a main 404 section
To set up a main 404 section:
Go to Customize theme. At the top of the page, use the dropdown to select Others > 404 page.
From the side menu, select Main 404.
Expand the Theme settings menu, and then select a setting to adjust. Refer to Section theme settings menu.