I was in the same boat. Trying to use PHP and CSS to remove the sidebar from the woocommerce cart and checkout pages. Then I found a solution that doesn’t require any coding or plugins. Here is what you do: navigate to your WordPress “Pages – All Pages” in your Dashboard. Find a page (like “Cart” or “Checkout”) and click edit. On the right side, find the section “Page Attributes” and change the “Template” from “Default Template” to “Full Width”. Click “Update” or “Preview Changes” to verify that the issue is resolved.
