CodePen Embed - css_content_course_media

<section class="container">
  <picture>
    <source media="(min-width: 1024px)" srcset="https://dummyimage.com/1280x500/ccc/aaa">
    <source media="(min-width: 700px)" srcset="https://dummyimage.com/700x360/ccc/aaa">
    

    <img src="https://dummyimage.com/500x360/ccc/aaa" alt="Random Images">
  </picture>
</section>

body {
  margin: 0 auto;
  font-family: sans-serif;
}

img {
  max-width: 100%;
  height: auto;

  vertical-align: middle;
}

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