Contact Form with Form Validation and Toast Notification

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

Reading Javascript code when utilized as objects and referencing those objects to call the value, and then store that object (which I think that it's like a template) into a variable.

Next time, make better DRY code.

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

Creating cohesiveness of the logic of the form validation between using submit button and having onfocusout attributes to the input elements.

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

Making the code follow the DRY principle. Applicable for HTML, CSS, and Javascript code.