Fill remaining vertical space with CSS using display:flex

Question

In a 3-row layout:

• the top row should be sized according to its contents
• the bottom row should have a fixed height in pixels
• the middle row s

Answer 1

Make it simple : DEMO

section {
  display: flex;
  flex-flow: column;
  height: 300px;
}

header {
  background: tomato;
  /* no flex rules, it will grow */
}

div {
  flex: 1;  /* 1 and it will fill whole space left if no flex value are set to other children*/
  background: gold;
  overflow: auto;
}

footer {
  background: lightgreen;
  min-height: 60px;  /* min-height has its purpose :) , unless you meant height*/
}

  

    header: sized to content
    
(but is it really?)
  
  

    main content: fills remaining space
 x
    
x
x
x
x
x
x
x
x
x

    
    x
x
x
x
x
x
x
x
x
 x
    
x
x
x
x
x
x
x
x
 x
    
x
x
x
x
x
x
x
x
 x
    
x
x
x
x
x
x
x
x

    
  
  

    footer: fixed height in px
  

Full screen version

section {
  display: flex;
  flex-flow: column;
  height: 100vh;
}

header {
  background: tomato;
  /* no flex rules, it will grow */
}

div {
  flex: 1;
  /* 1 and it will fill whole space left if no flex value are set to other children*/
  background: gold;
  overflow: auto;
}

footer {
  background: lightgreen;
  min-height: 60px;
  /* min-height has its purpose :) , unless you meant height*/
}

body {
  margin: 0;
}

  

    header: sized to content
    
(but is it really?)
  
  

    main content: fills remaining space
 x
    
x
x
x
x
x
x
x
x
x

    
    x
x
x
x
x
x
x
x
x
 x
    
x
x
x
x
x
x
x
x
 x
    
x
x
x
x
x
x
x
x
 x
    
x
x
x
x
x
x
x
x

    
  
  

    footer: fixed height in px