By default, the taskbar is available in the bottom center of the screen as seen below.



If you enabled automatically hide the taskbar, then the screen would look like below




To automatically hide the taskbar, follow the below steps:

1. Open Settings (Win+I).
   
   

2. Click on Personalization on the left side, and click on Taskbar on the right side
   
   
   
   

3. Click on Taskbar behaviors on the right side to expand it
   
   
   
   
   

4. Check (enable) Automatically hide the taskbar
   
   
   
   

You can show the taskbar on demand by:

• Hover pointer on border of taskbar location.

• Press the Win + T keys.

• On a touch screen, swipe inwards from the border (ex: bottom) of taskbar location.
  

To unhide the taskbar, repeat the above steps, and uncheck the option Automatically hide the taskbar