HTML5 flexible box model height calculation

Question

after researching the flexible box model for a whole day, I must say I really like it. It implements the functionality I implement in JavaScript in a fast and clean way. One

Answer 1

You must also make the div you want to expand a flex-box as well and add a flex value. This fixes the problem.

#fullsize{
    background-color: red;

    display: -webkit-box;
    display: box;
    display: -moz-box;

    box-flex:1;
    -webkit-box-flex:1;
    -moz-box-flex:1;
}