Font Weight 100 to 900 Explained
01. The Concept
CSS font weights range from 100 (Thin) to 900 (Black). The value 400 maps to normal and 700 maps exactly to bold.
02. Production-Ready Code
font-weight: 600; /* Semi-Bold */
💡 Pro Typography Tip
Skip weights to create contrast. Pair a 300 Light with a 700 Bold for maximum impact.