Responsive Tip Calculator | HTML, CSS, JavaScript

What are you most proud of, and what would you do differently next time?

• Growth in working with plain CSS for responsive web.
• I am also gaining more confidence in JavaScript.

What challenges did you encounter, and how did you overcome them?

My code wasn't populating the calculated results. I used dev tool debug but I wasn't getting any error message. So I used AI to tell me why my code wasn't working.

What specific areas of your project would you like help with?

When there is an error, people input should be highlighted red. It is not doing so

<input type="number" id="people" class="icon-person" placeholder="0" />

const numberOfPeople = document.getElementById("people");
 numberOfPeople.classList.remove("error"); // Remove highlight
 errorMessage.style.display = "none"; // Hide error message