Hi, To check if your CSS file is loaded in Odoo, open the developer tools in your browser and navigate to the Network tab. Refresh the page and look for the name of your CSS file in the list of network requests. If you find the file, it means that it is being loaded successfully. If not, check the file path in your manifest file and make sure that the CSS file is present in the specified location. You can also try clearing your browser cache and refreshing the page again.

Here are the steps in short:

1. Open developer tools in your browser.
2. Navigate to the Network tab.
3. Refresh the page.
4. Look for your CSS file in the list of network requests.
5. If you find the file, it is loaded successfully.
6. If not, check the file path in your manifest file and make sure that the CSS file is present in the specified location.

Hope it helps