What are the blue areas called in my webpage?

[m_mo_arsenalfc]

 

[celidheere]

That's a header and a nav

 

[m_mo_arsenalfc]

That's a header and a nav

thank you

 

[freedomrider]

saxib use bootstrap, my eyes are bleeding from this design

 

[Xaruun]

saxib use bootstrap, my eyes are bleeding from this design

It’s pure soul

 

[cawaale]

saxib use bootstrap, my eyes are bleeding from this design

The website has to be build from scratch if it’s for school, to get a high grade don’t focus too much on the design, just don’t overdo on the colours. The important bit is that you use the correct html <tags>