font-weight
property
Sets the weight (boldness) of the font. Numeric values range from 100 (thin) to 900 (black).
Syntax
font-weight: normal | bold | 100-900;
Example
css
.thin { font-weight: 100; }
.light { font-weight: 300; }
.normal { font-weight: 400; }
.medium { font-weight: 500; }
.semibold { font-weight: 600; }
.bold { font-weight: 700; }
.black { font-weight: 900; }