In your browser
You have a phone or a locked-down computer, or you just want to see it work first.
- Open a free AI chatAny of claude.ai, chatgpt.com, or gemini.google.com. All have a free tier that is enough for this.
- Ask for one complete fileCopy the prompt below. Asking for a single self-contained HTML file matters: it means you can run the result with no setup at all.
- Save it and open itCopy the code into a text editor, save it as countdown.html, and double-click the file. That is a working web page you made.
- Now change one thingGo back and ask for one change — a different colour, your own date, a sound at zero. Watch how you describe it. That is the whole skill.
Write a complete, single-file HTML page that counts down to 1 January 2027. Requirements: - One file. All CSS and JavaScript inline. No external libraries. - Big readable numbers: days, hours, minutes, seconds, updating every second. - Dark background, works on a phone screen. - Put my name at the top: <your name> Return only the file contents, nothing else.
You are done when You have a working page, made by describing it. That is vibe coding, in the original sense.