Abbr

<p>I love <abbr title="HyperText Markup Language">HTML</abbr>.</p>

Keyboard Input

<p>Please press <kbd>Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>R</kbd> to re-render an MDN page.</p>

Picture

Contains zero or more source elements and one image element to provide alternate images for different displays/devices.

<picture>
  <source media="(min-width: 650px)" srcset="img3.jpg">
  <source media="(min-width: 465px)" srcset="img2.jpg">
  <img src="img1.jpg" alt="Flowers">
</picture>