I don't have much experience with CSS, but I'm really eager to customize the appearance of my chart. The chart is generated by a vue.js library and comes with pre-defined CSS classes. However, I'm uncertain about how to access and modify them.
HTML: https://i.sstatic.net/ZQGh1.png
CSS:
https://i.sstatic.net/RP8Pr.png
The documentation explains the usage of CSS with this library in detail: https://i.sstatic.net/yQt7O.png