Interactive pricing component [Parcel/SASS/BEM]

I spent some time learning how to change the appearance of the slider, there were many different ways such as using box-shadow, using a div, or jquery. But I wanted to use an efficient method so I worked with a background color and a background image, the image is the progress bar, and depending on what you select, its width will change [0%, 25%, 50%, 75%, 100%]. There might be better ways to do this but I found this one more suitable for me. Apart from that everything was easy!

-Edit: somehow the screenshot does not show my solution properly.