CSS background color?

Question

I need some help with changing the background color.
I tried body{
Background-color: #38F8F7;
}
But it didn’t work. Can someone help?
https://code.sololearn.com/Wt8Tyf2kY5qG/?ref=app

Answer 1

You shouldn't have capitalized the first letter, css is case sensitive

Answer 2

Ok thx. I just forgot

Answer 3

CSS selectors are generally case-insensitive; this includes class and ID selectors.