Creating a complete responsive Domain IP Checker tool with colorful styling in HTML, CSS, and JavaScript requires several components and functionalities. Here's a simplified example using HTML, CSS, and JavaScript. We won't be using any external libraries for this example. ```html

Domain IP Checker

Enter a domain:

``` In this code: - We have an HTML structure that includes a form to enter a domain name and a "Check IP" button. - We use CSS for styling to make the tool responsive and visually appealing. - We use JavaScript to fetch the IP address of the entered domain using the ipify.org API and display the result. You can further enhance this code by adding error handling, input validation, and additional styling as needed.