Anyway to add new sub-pages?

[HoraceTing]

I have a question about adding new sub-pages to this template. I'd like to add a "Blog" section, I added a "Blog" section in the navigation.yml, and created a new blog.md file in _pages directory. I added "layout: default" in the .md file. However, the Blog page only appears basic characters without any formatting. Here is a screen capture:

Anyway to uniform the style of sub-pages with the front page? Thanks a lot!

[Mathsion2]

我有一个关于向此模板添加新子页面的问题。我想添加一个“博客”部分，我在 navigation.yml 中添加了一个“博客”部分，并在 _pages 目录中创建了一个新的 blog.md 文件。我在 .md 文件中添加了“layout: default”。但是，博客页面只显示基本字符，没有任何格式。以下是屏幕截图：

有没有办法让子页面的风格和首页统一？非常感谢！

Have you solve it? I want to make it, too. Please give me some advice.