1. Open the homepage of Taobao PC, click the "Open Shop" button in the upper right corner to enter the store backend management page;

2. In the store backend management page, click the "Shop Decoration" option in the left navigation bar to enter the shop decoration page;

3. In the shop decoration page, click the "Navigation Bar Settings" option in the left navigation bar to enter the navigation bar settings page;

4. In the navigation bar settings page, find the "Full Screen Navigation Bar" option and turn on the switch of this option;

5. After the settings are completed, click the "Save" button in the upper right corner of the page to save the settings and preview the effect.

Note: The full screen navigation bar setting requires the store to open the Taobao shop decoration function before it can be used.

To set the full screen navigation bar on Taobao PC, you need to follow the steps below:

1. Open the Taobao official website, find the "Settings" button in the upper right corner of the page, and click the pop-up drop-down menu.

2. Find the "My Taobao" option in the drop-down menu and click to enter.

3. Find the "Settings" option in the "My Taobao" page and click to enter.

4. Find the "Navigation Settings" option in the "Settings" page and click to enter.

5. In the "Navigation Settings" page, find the "Navigation Style" option and select "Full Screen Navigation Bar".

6. Click the "Save" button to complete the setting.

The above is how to set the full screen navigation bar on the Taobao PC side. I hope it can help you.