.editor-theme h1:not(.not-prose) strong,
.editor-theme h2:not(.not-prose) strong,
.editor-theme h3:not(.not-prose) strong,
.editor h1:not(.not-prose) strong,
.editor h2:not(.not-prose) strong,
.editor h3:not(.not-prose) strong {
  font-weight: 700 !important;
}