Apply CSS format to the application page
To apply the CSS formats to Banker's View user interface, do the following:
Go to Setup.
Search Static Resources in the search text box.
Select on the Static Resources in the search results.
Select BankerView_Application_Creation.
Select View File and, copy and save the displayed content in your local system with the file extension as css.
Go to Visualforce Pages and select Application Creation.
Select Preview.
On the page that appears, go to the bottom right corner of the page and select .
Go to Branding > Upload CSS.
Select the saved CSS file and select Open.
The page is appearing with the specified format in the CSS file.