Delete/Hide Metadata on posts

Hey there,

I am trying to delete or hide the meta posts “Posted on xxx by yyy”. I have googled and tried this:

/* Remove meta data */
.entry-meta .byline, .entry-meta .cat-links { display: none; }
.entry-meta .posted-on { display: none; }

which unfortunately doesn’t work for Storefront or at least on my website.
(Example here.)

Do you have another idea of how I can do this? Appreciate any kind of help! ??

Best,
Schorliee

The page I need help with: [log in to see the link]