How to not make modifier classes override day_selected class?

[josephJJ1020]

As can be seen above, I have custom modifiers for my calendar and if it meets the modifier condition, the day is "highlighted" and will need to have a teal background. I also have a class for selected days which gives the day a black background. However, when I try to select a "highlighted" day, it only seems to change the font color and not the background color. Seems that the modifier class always comes last in the HTML, after the default modifier classes have been defined.

Below is the current behavior:

2025-02-19.15-20-30.mp4

Expected behavior is for the "highlighted" day's teal background to be overridden by the "selected day" class.

Any ways I can make it so the modifier class names comes first so that it can be overridden by the default day_selected class name? Any response will be appreciated.