css bold only part of text flutter code example

Example 1: how to style text in flutter

Text(
'text'
style: TextStyle(),
),

Example 2: how to set font family in flutter

MaterialApp(
  title: 'Custom Fonts',
  // Set Raleway as the default app font.
  theme: ThemeData(fontFamily: 'Raleway'),
  home: MyHomePage(),
);