Css3 calc minus vh with pixel [duplicate]

Question

.wrap {
    height: calc(100vh - 50px);
}

this won't work. I got output of 50vh. Is there any where I can minus pixel with vh?

Answer 1

Less:

.wrap {
    height: calc(~"100vh - 50px");
}

Sass or pure css:

.wrap {
    height: calc(100vh - 50px);
}