<!DOCTYPE html> <!-- webkit-test-runner [ LayoutFormattingContextEnabled=true LayoutFormattingContextIntegrationEnabled=false ] -->
<style>
body {
  font-size: 20px;
  font-family: ahem;
}
.flex {
  display: flex;
  border: 10px solid blue;
  width: 600px;
}
</style>
<div class=flex>
  <div style="background-color: red">flex items</div>
  <div style="background-color: white;">flex items</div>
  <div style="background-color: green">everywhere</div>
</div>