Selecting a group of images in CSS

Site URL: https://gymnasiestoffet.dk

Hello,

I am currently trying to make my website look appealing by using Image Zoom. I have discovered what code to use, but am not sure how to select all of the images in the folder "Matematik". My site consists of quite a few folders. Is it possible to tag only images in this folder? or if this is not possible, then only images in a certain blog? 

The best regards

Alexander

First, wrap your CSS in style tag

Quote

<style>

paste all above CSS here

</style>

Next, add style code to Page Settings > Advanced > header (All pages in Matematik folder)