How do I get the HTML to use the CSS and JavaScript? I copied the HTML into a file called "signup.html", copied the CSS into a file called "signup.css", and copied the JavaScript into a file called "signup.js". I put all of those files in the same directory and opened the "signup.html" file in my browser. However, it doesn't appear to be using any of the styles defined in the CSS and the alert messages in the JavaScript never appear when I hit the "Sign Up" button. Also, how would I deploy this in a way that allows me to record what users enter?