Remove author and date

Hi, are you wanting to hide the author/date on all pages/posts on the site including the homepage and single post page?

Yes.

Hi, you can add the following to Appearance->Customize->Additional CSS

.single .site-main .entry-meta .byline, .single .site-main .entry-meta .posted-on, .site-main .entry-footer .byline, .site-main .entry-footer .posted-on {
    display: none;
}

Thanks but what you gave me does not seem to work for me…

Do you have a link to a live site that you’d like to have this done on? I just tested the code I provided again on a default install of Twenty Nineteen and it is hiding the author/date content you mentioned.

I just found out we can do it in the theme options…