<div class="container">
  <article class="artwork">
    <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/123941/artwork.jpg" alt="artwork">
  </article>
</div>

<p class="p">Demo by Maria Antonietta Perna. <a href="http://www.sitepoint.com/an-introduction-to-the-css-supports-rule-feature-queries" target="_blank">See article</a>.</p>
* {
	box-sizing: border-box;
  font-family: Arial, sans-serif;
}

.container {
	max-width: 80%;
	height: auto;
	background-color: #084F66;
	margin: 0 auto;
	padding: 0;
}

.artwork {
	margin: 0;
	padding: 0;
  background: linear-gradient(rgb(12, 185, 242), rgb(6, 49, 64));
}

img {
	display: block;
	width: 100%;
	height: auto;
}

/* If the browser supports blending, this rule set will be applied */
@supports(mix-blend-mode: overlay) {
  .artwork img {
    mix-blend-mode: overlay;
  }
}

/* If the browser doesn't support blending, the rule set below will be applied */
@supports not (mix-blend-mode: overlay) {
  .artwork img {
    opacity: 0.5;
  }
}

.p {
  text-align: center;
  padding-top: 50px;
  font-size: 12px;
}

External CSS

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External JavaScript

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