hiding the tags – it's only appearing in first post

Hi,

I wanted to hide the tags that were appearing at the bottom of each post. I’ve managed to do this by putting this code into my child theme:

.tag-links {
display: none;
}

It worked for every post but the first one.
Any idea how to hide the tags on my first post?
Here’s the link:
https://anniehearts.com/blog/

Any help is appreciated!
Thanks,
Annie