Full-width image

Creates a full-width image.

• Use left: 50% and right: 50% to position the image in the middle of the parent element.
• Use margin-left: -50vw and margin-right: -50vw to offset the image on both sides relative to the size of the viewport.
• Use width: 100vw and max-width: 100vw to size the image relative to the viewport.

<main>
  <h4>Lorem ipsum dolor sit amet</h4>
  <p>
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris molestie
    lobortis sapien, sit amet iaculis est interdum tincidunt. Nunc egestas nibh
    ut metus elementum consequat. Integer elit orci, rhoncus efficitur lectus
    eu, faucibus interdum felis.
  </p>
  <p>
    <img class="full-width" src="https://picsum.photos/id/257/2560/1440.jpg" />
  </p>
  <p>
    Orci varius natoque penatibus et magnis dis parturient montes, nascetur
    ridiculus mus. Nullam pretium lectus sed ex efficitur, ac varius sapien
    gravida. Sed facilisis elit quis sem sollicitudin, ut aliquam neque
    eleifend. Maecenas sagittis neque sapien, ac tempus nulla tempus nec.
    Curabitur tellus est, convallis id dolor ut, porta hendrerit quam.
  </p>
</main>

main {
  margin: 0 auto;
  max-width: 640px;
}

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

.full-width {
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  max-width: 100vw;
  width: 100vw;
}