Nothing runs until you say so. Edit as much as you like, then press Run to see it.
The Code Builder puts three files and a preview side by side, and asks you to type punctuation-heavy code into them. On a phone the on-screen keyboard covers the line you are writing, there is no Tab key, and autocorrect fights you the whole way. You would spend the period on the keyboard rather than on the code.
Open this on a laptop, a Chromebook, or a tablet with a keyboard.
Read the Lesson instead Both pages
The Lesson works fine on a phone, editors and all. It is only this page that needs the room.
Nothing runs until you say so. Edit as much as you like, then press Run to see it.
Every one of these uses the real Wild Willows data. Pick one, or shuffle for three more.