Via a Child Directory

https://www.baseurl.com/about/

If you wished to have a “cleaner” looking URL, you could create an additional child directory labeled about/ and place a file saved as index.html within that directory.

In the next sub-topic, you’ll see how an index.html is one of those files browsers expect to find. Because of this, if an index.html file is in a directory, you usually do not have to include it in the file path; the browser will request it automatically.

Note Notice how we do not add /index.html at the end of the URL above; instead the URL simply ends with a directory slash (/).

.
├── index.html
├──  about/
│   └──  index.html 
├──  css/
│   └──  style.css
└──  images/
    ├──  photo-1.jpg
    └──  photo-2.jpg