code-block + Vanilla Breeze — Basic Demo

JavaScript with line numbers + highlight + focus mode

function greet(name) { const message = `Hello, ${name}!`; console.log(message); return message; } greet('Vanilla Breeze');

HTML with filename header + copy button

<!doctype html> <html lang="en"> <body> <bread-crumb> <ol> <li><a href="/">Home</a></li> <li><span aria-current="page">Demo</span></li> </ol> </bread-crumb> </body> </html>

Diff view

- const old = 'before'; + const updated = 'after'; const same = true;