Missing space between title of blog and prev/back navigaton.

Hello
On my page edition21.mini-sabbatical.ch I like to have a foreward/backward navigation on the blog entry itself. After an update of generatepress (?) the gap between the title and the foreward/backward link disappeard. Below the CSS and PHP code I have in place for it.
BR Konstantin

add_action( 'generate_after_entry_title', 'tu_move_post_navigation' );
function tu_move_post_navigation() {
if ( function_exists( 'generate_content_nav' ) && is_single() ) {
generate_content_nav( 'nav-below' );
}
}

add_filter( 'generate_category_post_navigation','generate_force_category_post_navigation' );
function generate_force_category_post_navigation()
{
return true;
}

.entry-title {
text-align: center;
}

.entry-meta #nav-below {
display: none;
}

.nav-previous .prev:before {
display: none;
}

.nav-next .next:before {
display: none;
}

.nav-previous {
float: left;
}

.nav-next {
float: right;
}