How to change background in blog section?

Hi there!

I changed background color of every entry of my posts in my blog section, from white to grey. But also it changed every background color when you go inside the article (i mean in every post inside). I use this css code

.one-container:not(.page) .inside-article {
padding: 1rem 1.5rem 1rem 1.5rem;
background-color: #F7F7F7;
}

I want a background color for every entry but only in blog section, where displays all my posts, not inside every article.

Also i want to change title color.

How can i do that?

Thanks!