Change the font size: Tap select multiple paragraphs where you want the background color to appear.
Tap , then tap Paragraph Borders & Background in the Text menu.
Tap Background, tap Preset, then tap No Fill (you may need to swipe left first).
When you open a document that uses fonts that you don’t have, a missing font notification appears briefly at the top of the page. If you want to replace the missing fonts, tap the notification, tap Resolve Font Warnings, then tap Resolve. If the notification is no longer visible, tap Add borders and rules (lines) in Pages on iPad