Themes come with five icon sets:

• Bootstrap Icons (New Learning Theme) - https://icons.getbootstrap.com
• Font Awesome Icons (free) - https://fontawesome.com
• Lineicons (free, New Learning Theme) - https://lineicons.com
• Remix Icons (New Learning Theme) - https://remixicon.com
• Stroke 7 Icon Font Set by Pixeden - https://www.pixeden.com/icon-fonts/stroke-7-icon-font-set