Gain insights into practical CSS theming methods, delve into problem-solving, and discover the css-theming package to create highly customizable, dark mode-friendly apps in this course.

CSS isn’t what it used to be. Today, you’ll be hard-pressed to find a strong, straightforward, and expressive UI language that can beat modern CSS. As the tech world moves more and more towards web-based frameworks for UI, we start to see a bigger emphasis on highly customized looks for apps.

In this course, you'll learn how to properly develop apps that are theme aware. This course is split into two sections: in the first section, you will learn the practical methods and patterns around theming and discover common problems and their solutions. In the second section, you will get hands-on experience with the css-theming package and through it you'll learn how to customize every facet of your app. Most importantly, no matter the kind of app you're developing, users have come to expect dark mode support nowadays as a given.

By the end of this course you’ll be able to create stunning apps that are highly customizable by either applying what you learned in your own way or using the css-theming package.

CSS Theming for Professionals

All samples are included in the [repository](https://github.com/mrahhal/css-theming) under the [samples](https://github.com/mrahhal/css-theming/tree/master/samples) folder. You can run any sample by executing the following commands inside a certain sample's folder:

```
$ npm i
$ npm start
```

# Niai

Niai is a modern app for looking up similar Kanjis, homonyms, and synonyms in the Japanese language, which is also open sourced [here](https://github.com/mrahhal/niai)! So, you can check it for a real-world usage of `css-theming`.

![img1](https://github.com/mrahhal/niai/raw/main/images/snap_light.png)

![img2](https://github.com/mrahhal/niai/raw/main/images/snap_dark.png)

# Basic

The [basic](https://github.com/mrahhal/css-theming/tree/master/samples/basic) sample demonstrates how to setup `css-theming` in an app. We don't do anything special here, we only initialize the default theme category.

# Additional theme props

The [additional-theme-props](https://github.com/mrahhal/css-theming/tree/master/samples/additional-theme-props) sample demonstrates how to add additional theme props to be consumed in the app.

# Additional sidebar theme category

The [additional-sidebar-theme-category](https://github.com/mrahhal/css-theming/tree/master/samples/additional-sidebar-theme-category) sample demonstrates how to register a sidebar theme category.

# Additional navbar theme category

The [additional-navbar-theme-category](https://github.com/mrahhal/css-theming/tree/master/samples/additional-navbar-theme-category) sample demonstrates how to register a sidebar theme category.

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Do you have any suggestions for a new sample? Be sure to reach out to me about it!

This lesson provides samples for visualizing what you’ve studied so far in the course.

Before Getting Started

Theory

Using css-theming

Samples

About the Samples

Niai