COLOR and FONT CSS

1. color : red; for more use color hunt.com
2. font-family: font family , fall back for more use font google .com
3. font-weigtht: 100 to 900 and also use (normal bold), (relative to parent - lighter bolder )
4. px is 1/96 inche pt is 1/72 inche em - relative to parent rem - relative to root