Copyable text in the "benefits" images

Currently, the images used for the "benefits" section are PNGs generated by Carbon. Once https://github.com/carbon-app/carbon/issues/210 is completed, we can probably make these copyable examples. I think that would give an interesting dynamic to that section of the website.

首先定位网站的“benefits”部分，并查看链接的 Carbon issue 210，以确认生成的示例是否可以变得可复制。完成标准是：benefits 示例在视觉上仍然合适，同时允许访问者复制其中的文本。

由索引模型根据 Issue 内容生成。