Why when i change an element color or a class color nothing happens?

Question

So im new here and im learning html right now
I've installed notepad++ and everything is fine
But i tried to change a selected class color with this code
.name {
Background-color: black;
Color: white;
}
Nothing changes
And the code appear at the html page as a text
And if you recommend me a text editor better than notepad++ i will be thankfull

Answer 1

1. Please share your code so we can try to help you.
2. Vs code is probably the best code editor available and it’s free

Answer 2

in css property name don't start with uppercase

.name {
background-color: black;
color: white;
}