I NEED HELP WITH CSS PLZ

Idk if its gonna work worked for me tho, so it should be fine oh now idk if i didnt erase the color dor the second one, thee also in the background goes the one you want, forgot to check it

Okay so for the bigger one you'll have to write(if you dont have it in the code, search for both first! im mean div#header and all):
}
div#header {
background:#color you want;
}
for the smaller one:
}
div#hSub {
color:(is for the lines in sections fe from random to online)
background:#020801e3
}
idk if it didn't cut of but i made it that way

https://media.giphy.com/media/Id6RRFgZ3HGaQ/giphy.gif

HELP ME

PLEASE I HAD TO MAKE A INSTA ACOUNT TO SHOW YOU