The FontWeight property in the BaseStyles class represents the font-weight CSS property. This property allows you to specify the weight (or boldness) of the font used in the UI element. It is a nullable integer, meaning it can hold a value or be null if not set.

To use the FontWeight property, assign it an integer value that corresponds to the desired font weight. Common values include:

• 100 - Thin
• 200 - Extra Light
• 300 - Light
• 400 - Normal
• 500 - Medium
• 600 - Semi Bold
• 700 - Bold
• 800 - Extra Bold
• 900 - Black

If you do not set a value, the property will be null, and the default font weight will be used.