It looks like you are using Firefox.
It's recommended to use this CSS code maker with a WebKit or Blink based browser for the best experience eg. Chrome, Safari, Edge, Opera, Brave etc..
Firefox does not support ::-webkit-scrollbar selectors.
For customizing scrollbar on Firefox you should use scrollbar-color and scrollbar-width selectors.
CSS Scrollbar Code Generator is an online tool designed specifically for web developers who wish to customize the appearance of scrollbars on their websites or web applications. This tool simplifies the process of generating CSS scrollbar code that allows you to change various aspects of the scrollbar, including its color, width, thumb shape, making your website stand out with unique scrolling experiences.
Traditionally, scrollbars have been a browser-controlled element with limited styling options. With this CSS tool, you now have more control over customizing these elements of the scrollbar to better fit your website's aesthetics.
Intuitive Interface: The generator provides an intuitive interface where users can easily adjust scrollbar properties through simple sliders and input fields.
Instant Preview: See changes in real-time as you tweak settings, ensuring that what you visualize is exactly what you get.
Export Code: Once satisfied with the scrollbar style, you can copy the generated CSS code directly to use in your projects.