Assuming you have an app configured to use Tailwind CSS, your main CSS file should include Tailwind and your font import.

When using Google Fonts, the @import for the font must come first, before @import "tailwindcss":

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@100;200;300;400;500;700;900&display=swap');
@import "tailwindcss";

Then add a base layer to set the default font:

@layer base {
  html {
    font-family: Inter, system-ui, sans-serif;
  }
}

In the end, your CSS file will look like this:

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@100;200;300;400;500;700;900&display=swap');
@import "tailwindcss";

@layer base {
  html {
    font-family: Inter, system-ui, sans-serif;
  }
}

Now your default font is set, and you can use font-bold, font-medium, and similar classes to set various weights.

Lessons in this unit:

0:	Introduction
1:	Box model properties
2:	Colors
3:	Typography
4:	Flexbox and Grid in Tailwind
5:	Modifiers
6:	Responsive design in Tailwind
7:	Apply a style to children with Tailwind
8:	How to fix Unknown at rule @tailwindcss (unknownAtRules) in VS Code
9:	How to align center vertically using Tailwind
10:	▶︎ How to use custom fonts with Tailwind CSS
11:	Setting up Tailwind CSS on Vite
12:	Show-hide an element based on existence of a parent class in Tailwind
13:	The Tailwind Cheat Sheet
14:	How to set up Tailwind CSS (v4)
15:	You can’t generate classes dynamically in Tailwind