Flexbox: shrink image to fit

Question

I am trying to design a page with the following properties that will be used as digital signage:

• Page height is viewport height (100vh) so that sc

Answer 1

So here's what we know:

• The page height is 100vh
• The first row is static (height: 100px)
• The second row is static (height: 150px)
• The third row, which contains images, should fill the remaining height

I think the solution lies in basic math:

100vh - 100px - 150px = height of third row

Instead of this in your code:

div.green {
    background-color: green;
    flex: 0 1 auto;
}

img {
    max-height: 100%;
}

Try this:

div.green {
    background-color: green;
    flex: 1 1 auto;
}

img {
    height: calc(100vh - 250px);
}

body {
  margin: 0;
}
div#container {
  display: flex;
  flex-direction: column;
  height: 100vh;
}
div.red {
  height: 100px;
  background-color: red;
  flex: 0 0 auto;
}
div.blue {
  height: 150px;
  background-color: blue;
  flex: 0 0 auto;
}
/* 
div.green {
  background-color: green;
  flex: 0 1 auto;
}
img
{
  max-height: 100%;
}
*/

div.green {
  background-color: green;
  flex: 1 1 auto;
}
img {
  height: calc(100vh - 250px);
}

revised fiddle