How do I get rid of the task taskbar or whatever on the bottom of my screen? Windows 10 YouTube problem?

I have the bar on the bottom of my screen when I'm fullscreen on youtube videos. I have a 2017 lenovo flagship with windows ten. How can i fix this? How do I get rid of the task taskbar or whatever on the bottom of my screen Windows 10 YouTube problem

Guest

Auto Hide the TASK BAR.
Right Click on the Task Bar and in the pop up menu clcik on Settings. Turn on Auto Hide

Bill

Right click on the taskbar.

chrisjbsc