Place square svg to the center of the screen, scale it to fit the screen's width and height with some constraints

Question

It seem to be a silly question and possibly a dupe, but I couldn\'t find a good solution for a while, so finally dare to ask.

I want to place an

Answer 1

The flexbox solution would be my first choice. Since someone else has already answered with that idea I came up with this different approach.

Basically it is the absolute centering technique and rely on absolute position and auto margin to center the element.

body {
  height: 100vh;
  margin: 0;
}

svg#picture {
  max-height: 15cm;
  max-width: 15cm;
  height:100%;
  width:100%;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  margin:auto;
}