Responsive ping coming page using [VanillaJS, TailwindCSS]

Hi everyone, this is my solution of "Ping-coming-page". Any comment would be appreciated. Thanks for your help! :D

In this challenge I learned:

• Code seperation in index.js
• onblur event, occurs when an element loses focus.

emailInput.addEventListener("blur", () => {
  validateEmail(emailInput.value);
});