GitHub is one of the world's largest open source software development websites, containing millions of open source projects and code libraries. GitHub allows users to create their own code libraries and share and communicate with other users, making software development more convenient and efficient. To make the code base more personalized, GitHub allows users to add themes to beautify the page. This article will introduce how to add topics on GitHub.

1. Choose a theme that suits you
Before adding a theme, you need to choose a theme that suits you. There are many free themes to choose from on GitHub, you can find them from:

1. https://github.com/topics
2. https://github.com/ showcases
3. https://github.com/explore

These themes can be filtered based on programming language, theme color, page layout, etc. Once you've chosen a theme that works for you, you can start adding themes. .

2. Open the theme configuration file

1. On your GitHub code repository page, click the "Settings" button in the upper right corner of the page.
2. Go to the next page and select the "Options" tab.
3. Select the "GitHub Pages" tab among the tabs.
4. Change the "source" drop-down menu from "None" to "master branch".
5. Click the "Choose a theme" button to select the theme you like. This will automatically create a file called "_config.yml" and add your selected theme to it.

3. Edit the theme configuration file
In the second step, we created a file called "_config.yml". By editing this file, you can change the colors, fonts, etc. of your theme. You can use any text editor to edit this file, such as Sublime text, Visual Studio Code, etc. Before editing a file, you need to understand its format and syntax.

This is an example of a typical _config.yml file

Name of your site (displayed in the header)

name: Jonathan Doe

Short bio or description (displayed in the header)

description: >- # this means to ignore newlines until the next >
A Human Being

URL of your avatar or profile pic (you could use your GitHub profile pic)

avatar: /assets/images/avatar.jpg

Banner image (optional)

header:

image: /assets/images/banner.jpg

height: 50vh

Customize the theme

main_color: "#3cba54"
secondary_color: "#2c3e50"
font_family: "Helvetica, sans-serif"
google_analytics: UA-xxxxxxxx-x

In addition to the theme color, font and other options mentioned above, the file also includes website name, website description, avatar and options like Google Analytics. When you've finished editing the file, save the file and commit it to your GitHub repository. After doing this, your GitHub page will display your own cool theme!

Summary:
Adding a topic on GitHub is very simple, just follow the steps above. However, before adding a theme, you need to choose a theme that suits you, and then understand the theme's configuration file format and syntax before you can edit it. By adding a theme, you can add a personalized touch to your GitHub repository, making it more eye-catching and attractive.

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