I want to display the category navigation on checkout page in magento 2.0. It is working on all pages but not showing only on checkout page .Do U have any idea. Please reply asap?
Have a look at the following file:
Overwrite this file in your local theme, and simply do not remove the blocks you want to keep. In your case that will be this tag:
<referenceBlock name="catalog.topnav" remove="true"/>
You should also check your stylesheet files, the menu will be hidden with CSS by default.