Hello,
Thank you – that’s it fixed now!
I just had to add an opening bracket (before .page) and a closing bracket to the code you gave in order for it to work.
@media screen and (min-width: 48em)
{.page.page-one-column .entry-header, .twentyseventeen-front-page.page-one-column .entry-header, .archive.page-one-column:not(.has-sidebar) .page-header {
margin-bottom: 0px;
}}
Thanks again. I’m very happy!
M.