<!DOCTYPE html> <link rel="author" title="Sergio Villar Senin" href="mailto:svillar@igalia.com"> <link href="support/flexbox.css" rel="stylesheet"> <style> .flex-item { flex: 1 0 auto; height: 100%; border: 1px solid blue; } </style> <div class="flexbox"> <div class="flexbox column"> <div class="flex-item"> <div>AAA</div> </div> <div class="flex-item"> <div>BBB</div> </div> </div> </div>