Sure, here's an example HTML file with JavaScript code that implements a CSS Beautifier tool: php Copy code

CSS Beautifier Tool

Enter CSS code:

This HTML file includes a simple form with a textarea input for the user to enter CSS code and a "Beautify" button that triggers the beautifyCSS() function when clicked. The beautifyCSS() function uses regular expressions to remove unnecessary whitespace from the CSS code and replaces the input textarea with a new textarea containing the beautified CSS. The styles in the head section of the HTML file define the layout and appearance of the page and form elements. This code should be responsive and work on most modern browsers and devices