# Tailwind CSS
> Customize your site with Tailwind CSS v4
Source: https://juicydocs.freshjuice.dev/docs/usage/tailwind/
JuicyDocs is built with Tailwind CSS v4, providing a utility-first approach to styling.
## Theme Configuration
The main theme configuration is in `src/assets/css/main.css`:
```css
@import "tailwindcss";
@theme {
/* Font families */
--font-sans: "General Sans", system-ui, sans-serif;
--font-mono: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas, monospace;
/* Custom breakpoints */
--breakpoint-xs: 24.375rem; /* 390px */
/* Max widths */
--max-width-8xl: 90rem; /* 1440px */
--max-width-9xl: 105rem; /* 1680px */
}
```
## CSS Files
Styles are organized into modular files in `src/assets/css/`:
| File | Purpose |
|------|---------|
| `main.css` | Main entry point, theme configuration |
| `_base.css` | Base styles, fonts, resets |
| `_typography.css` | Prose/content typography |
| `_buttons.css` | Button components |
| `_navigation.css` | Sidebar, TOC, search styles |
| `_code.css` | Code block and syntax highlighting |
| `_utilities.css` | Custom utility classes |
## Changing Colors
JuicyDocs uses Tailwind's color palette. The primary accent colors are:
- **Light mode**: Red (`red-500`, `red-600`, etc.)
- **Dark mode**: Amber (`amber-400`, `amber-500`, etc.)
To change the accent color, search and replace in the CSS files:
```css
/* Example: Change from red to blue */
/* Before */
@apply text-red-600 dark:text-amber-400;
/* After */
@apply text-blue-600 dark:text-blue-400;
```
## Dark Mode
Tailwind CSS v4 supports dark mode via the `dark:` variant. JuicyDocs uses the `class` strategy:
```html
```
Example usage in templates:
```html
This text adapts to the theme
```
## Custom Breakpoints
JuicyDocs includes a custom `xs` breakpoint at 390px (iPhone screen width):
```css
@theme {
--breakpoint-xs: 24.375rem;
}
```
Use it like any other breakpoint:
```html
Only visible on screens 390px and wider
```
## Adding Custom Styles
Add custom styles in `src/assets/css/main.css` after the imports:
```css
@import "tailwindcss";
@import "./_base.css";
/* ... other imports ... */
/* Your custom styles */
@layer components {
.my-custom-button {
@apply px-4 py-2 rounded-lg bg-blue-500 text-white;
}
}
```