How do I hide this string of codes?

Things I have tried

What I’m trying to do

I used block reference, but I have a code every time, I want to hide it, what to do

@jone_simth I use the following CSS snippet to make block IDs transparent, and displaying just the “ID” string instead:

.CodeMirror-code > :not(.CodeMirror-activeline) .cm-blockid {
    color: transparent;
}

.CodeMirror-code > :not(.CodeMirror-activeline) .cm-blockid::before {
    content: "ID";
    color: var(--text-muted);
}

You can adapt this to make block IDs appear different or disappear completely. E.g., you can use font-size: 0 in the first part, and font-size: 50% in the second.