header, footer, nav, .site-header, .site-footer, .main-navigation, .wp-block-navigation {
  display: none !important;
}

body {
  margin: 0 !important;
  padding: 0 !important;
}
h1.entry-title {
  display: none !important;
}
/* Verstecke Titel auf Seiten */
h1.entry-title,
.page .entry-header,
.page-title,
.post-title,
h1.page-title {
  display: none !important;
}
h1.wp-block-post-title {
  display: none !important;
}