Icon of freecodecamp isn’t visible although I can clic on it. And I’ve loaded
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
You are importing version 4.3 of fontawesome.
I have both versions
Wow! I didn’t know! Thaks a lot!
You’re also getting a
Uncaught TypeError: Cannot read property 'fn' of undefined error in your console - I think you need to import jQuery JS before Bootstrap.
Learn to read the console. The errors for font awesome were there too. The console is the most important tool a web dev has. ctrl-shft-j or i in most browsers.