calc() not working within media queries

Question

@media screen and (max-width: calc(2000px-1px)) { 
  .col { width: 200px; }
}

The value after subtraction s

Answer 1

Pinal's answer is great, but your CSS wouldn't work anyways. You need spaces separating your units. In CSS 2000px-1px would be considered a single value, which obviously isn't a valid unit. It should be 2000px - 1px.

I'm currently using Chrome 66 and calc works fine in media queries.