Need help with CCS Themes

Basement
2

Solved the 1st question:

The tags I was looking for, were:

  • .cm-header-1
  • .markdown-preview-view h1

Examples:


/* Underline H1 heading in Edit mode */
.cm-header-1 {
  border-bottom: 1px solid var(--text-faint);
}
.cm-header-2 {
  border-bottom: 1px solid var(--text-faint);
}

/* ==========headings======= */
/* Underline = border-bottom */
.markdown-preview-view h1 {
  border-bottom: 1px solid var(--text-faint);
}
.markdown-preview-view h2 {
  border-bottom: 1px solid var(--text-faint);
}