What's wrong with the mixin?

Question

css

What's wrong with the mixin on less? For some reason, when adding this mixin, any changes in the entire code stop working, and the mixin does not work either.

@maxWidth: 1280;
    .adaptiv-font(@pcSize, @mobSize) {
    @addSize: @pcSize - @mobSize;
    @maxWidth: @maxWidth - 320;
    font-size: calc(~"@mobSize + px" + @{addSize} * ((100vw - 320px) / @{maxWidth}));
}

Answer 1

@maxWidth: 1280;
.adaptiv-font(@pcSize, @mobSize) {
  @addSize: @pcSize - @mobSize;
  @mWidth: @maxWidth - 320;
  font-size: calc((@mobSize) * 1px + @addSize * ((100vw - 320px) / @mWidth));
}