What to do if with Media Queries H1 they turn white and do not react in any way?

Question

css

Good afternoon, I made Media Queries for the site. And for some reason H1 do not react to properties and are white.
I remove media queries and nothing changes.
https://github.com/Rudy996/dfdfhdfhhdf
https://rudy996.github.io/dfdfhdfhhdf/index.html

Answer 1

https://rudy996.github.io/dfdfhdfhhdf/css/main.css line 80

.date {
  color: #fff;
}

that's why they're white.
And it is recommended to place only one h1 on the page