In HTML the body tag holds all the visible part of a webpage. So the <body> is a container tag. If we write any thing into <body> & </body>, it will visible in web browser.
Also Read: Difference between CSS initial and inherit
In HTML the <body> tag is child of <html> tag. So lets try with basic HTML templete which will clear everything if you are new in HTML.
In html the <html>, <head> and <body> tag can be used one time. So you can’t use <body> tag multiple times.