congo/exampleSite/content/docs/advanced-customisation.md

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---
title: "Advanced Customisation"
date: 2020-08-09
draft: false
description: "Learn how to build Congo manually."
slug: "advanced-customisation"
tags: ["advanced", "css", "docs"]
showDate: false
showAuthor: false
---
There are a couple of ways you can make style changes to Congo.
If you just need to add or override some simple styles, you can do so by creating a `custom.css` file in your project's `static/css/` folder. This file will be loaded automatically after the theme's default styles.
Alternatively, if you'd like to make a major change, you can take advantage of Tailwind CSS's JIT compiler and rebuild the entire theme CSS from scratch.
{{< alert >}}
**Note:** Building the theme manually is intended for advanced users.
{{< /alert >}}
Change into the `themes/congo/` folder and install the project dependencies.
```bash
npm install
```
Once installed, you can edit the `themes/congo/tailwind.config.js` to change the styles that are applied throughout the theme. You can also adjust specific styles in `themes/congo/assets/css/main.css`.
To allow for easy theme colour changes, Congo defines a `primary` and `secondary` colour palette that is used throughout the theme. In order to change the colour across the entire theme, simply edit the `tailwind.config.js` file accordingly.
For example, to change to a green colour scheme, you could apply these changes:
```js
// themes/congo/tailwind.config.js
theme: {
colors: {
transparent: "transparent",
white: colors.white,
gray: colors.gray,
primary: colors.lime,
secondary: colors.teal,
},
...
}
```
For a full list of colours available, and their corresponding configuration values, see the official [Tailwind docs](https://tailwindcss.com/docs/customizing-colors#color-palette-reference).
After editing the configuration, you need to rebuild the theme's stylesheets.
```bash
npm run build
```
This will automatically output a minified CSS file to `/themes/congo/static/css/main.css`.
To aid with testing style changes, you can also run the Tailwind JIT comiler in watch mode.
```bash
npm run dev
```
Now whenever you make a change, the (non-minified) CSS files will be rebuilt automatically. This mode is useful to run when using `hugo server` to preview your site during development. Remember to perform a full build before publishing your website.