Skipping border color in minification

[ssahu123]

Before minification it was like this:
border: 1px solid rgba(var(--border), 1);

and after minification it gives the output like this:
border: 1px solid;

Not possible for me to put border color property separately in the whole project.

[waffledonkey]

why not

border: 1px solid var(--border, default);

or

border: 1px solid rgba(var(--borderRed, default), var(--borderGreen, default), var(--borderBlue, default), 1);