module.exports = {
    purge: ['./src/**/*.{js,jsx,ts,tsx}', './public/index.html'],
    darkMode: false,
    theme: {
        extend: {
            textColor: {
                primary: '#17171b',
                secondary: '#718096',
            },
        },
        fontFamily: {
            mono: ['NotoMono', 'source-code-pro', 'menlo', 'monaco', 'consolas', 'Courier New', 'monospace'],
            sans: [
                'NotoSans',
                '-apple-system',
                'blinkmacsystemfont',
                'Segoe UI',
                'Roboto',
                'Oxygen',
                'Ubuntu',
                'Cantarell',
                'Fira Sans',
                'Droid Sans',
                'Helvetica Neue',
                'sans-serif',
            ],
        },
    },
    variants: {
        extend: {},
    },
    plugins: [],
};

@@ -786,24 +786,217 @@
 %0A        %7D,%0A
+        fontSize: %7B%0A            sm: '1.2rem',%0A            base: '1.4rem',%0A            lg: '1.6rem',%0A            xl: '2rem',%0A            '2xl': '2.8rem',%0A            '3xl': '3.6rem',%0A        %7D,%0A
     %7D,%0A    v

Add fontSize overrides to tailwind.config.js