Please provide me with the design you're referring to. I need to know what the design is about to write content on it. For example, is it a:

* Drawing of a sidewalk and road?

* A 3D model of a street with different sidewalk variations?

* A design concept for a specific type of sidewalk construction?

Once you tell me what the design is, I can write content about it, split into multiple parts, and highlight key terms with bold and italic formatting.