How can I add custom CSS to my GitHub README.md file?

Custom CSS for README.md in a GitHub Repo

In order to modify the styling of your README.md file using custom CSS, you can utilize the .github/github.css file. This file overrides the default styling provided by GitHub, allowing you to customize the appearance of your README.

However, if you are unable to observe any changes after modifying the .github/github.css file, it may be due to the use of an outdated syntax or the placement of your custom CSS within the file. Ensure that your CSS is written in valid CSS syntax and that you have placed it within the .github/github.css file located at the root of your GitHub repository.

Furthermore, you can incorporate HTML and CSS within an SVG file using the tag. This technique enables you to embed animated text within your GitHub README. For instance, you could employ the following code to animate text color changes:

<code class="css">h1 {
  color: red;
  animation: myanimation 2s infinite;
}

@keyframes myanimation {
  from {
    color: red;
  }
  to {
    color: yellow;
  }
}</code>

<code class="html"><h1>Hello world!</h1></code>

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