<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <title>Backgrounds and Borders: background-size</title>
    <link rel="stylesheet" href="../styles.css" />
    <style>
      * {
        box-sizing: border-box;
      }

      .box {
        width: 500px;
        height: 300px;
        padding: 0.5em;
        border: 1px solid #ccc;
        margin: 20px;
      }
    </style>

    <style class="editable">
      .box {
        background-image: url(balloons.jpg);
        background-rep