@tuanphan My bad. Nvm. It worked. Just added .Main and .Header after body. So thank you so much for your help. Means a lot.
I wanted to know a couple more things actually:
1. Is there a way to invert the color of the logo? I got a black logo as homepage navigation. I usually just use
header {
filter: invert(100%);
}
in custom css in order to invert the logo color but this time when I use this it inverts the whole header color. Like is there any way to target the logo individually and invert its color?
2. And, I understand it might be a long shot, but is there any way to activate the dark theme with a button instead of automatically recognizing it from the browser window? Like a switch button?