Font size to use for a responsive UI on Mobile & Desktop

Mobile

1. Smallest: 12 px
2. Details: 13 - 14 px
3. Body Text: 16 - 18 px
4. Subtitle: 18 - 20 px
5. Title: 24 - 28 px
6. Header: 32 - 38 px

Desktop

1. Smallest: 16 px
2. Details: 16 - 18 px
3. Body Text: 20 - 21 px
4. Subtitle: 21 - 24 px
5. Title: 34 - 38 px
6. Header: 40 - 48 px