How can i make css only count for posts in category x

Hi there,

is this for the Category Archive ? The Single Post or Both ?

For the posts IN category X. Not the category itself.

If its to style elements within the post content then you can target the category-slug class that is added to the main content. For example:

.single-post .category-your_slug p {
    color: red;
}

This would change the content text color of any post with category-your_slug .... change your_slug to match you category.

If you want to apply CSS to the entire page, you would need to add a little PHP to include the category-slug in the body tag. I provide that PHP Snippet here:

https://generatepress.com/forums/topic/change-header-background-for-category-or-pages/page/2/#post-1460013

Sorry i dont get it. I put the code in functions.php.

My website:
User: closte
pw: closte
https://app-5f75b7a3c1ac190fbc571742.closte.com/birkenpech-herstellen/

What i want to do is use this css, but only for posts in certain catregories. How would i select that?

@media (min-width: 1025px) {
body.single .entry-content {
padding: 0px 150px 0px 150px;
}
}

@media (min-width: 1025px) {
body.single .entry-header {
padding: 0px 150px 0px 150px;
}
}

To apply the CSS just to that category you would use this:

.category-survival.single .entry-content {
    padding: 0px 150px 0px 150px;
}