How to Create Pure CSS 3D Ribbon

Since I always insists using CSS3 instead of images, here is a good example of CSS usage to create a 3D ribbon. Remember this is pure CSS, there is no image used in this to achieve it. I thank James Koster for making this happen and I hope to see even more CSS tuts from him. So lets have a look at his CSS 3D ribbon and how to create it.

James has used a single level element containing a child element with the class.

<p class="ribbon">
    <strong class="ribbon-content">Everybody loves ribbons</strong>
</p>

In order to achieve it using CSS, he has used before and after pseudo codes and good use of border properties

.ribbon {
  font-size: 16px !important;
  /* This ribbon is based on a 16px font side and a 24px vertical rhythm. I've used em's to position each element for scalability. If you want to use a different font size you may have to play with the position of the ribbon elements */

  position: relative;
  background: #ba89b6;
  color: #fff;
  text-align: center;
  padding: 1em 2em; /* Adjust to suit */
  margin: 0 0 3em; /* Based on 24px vertical rhythm. 48px bottom margin - normally 24 but the ribbon 'graphics' take up 24px themselves so we double it. */
}
.ribbon:before, .ribbon:after {
  content: "";
  position: absolute;
  display: block;
  bottom: -1em;
  border: 1.5em solid #986794;
  z-index: -1;
}
.ribbon:before {
  left: -2em;
  border-right-width: 1.5em;
  border-left-color: transparent;
}
.ribbon:after {
  right: -2em;
  border-left-width: 1.5em;
  border-right-color: transparent;
}
.ribbon .ribbon-content:before, .ribbon .ribbon-content:after {
  content: "";
  position: absolute;
  display: block;
  border-style: solid;
  border-color: #804f7c transparent transparent transparent;
  bottom: -1em;
}
.ribbon .ribbon-content:before {
  left: 0;
  border-width: 1em 0 0 1em;
}
.ribbon .ribbon-content:after {
  right: 0;
  border-width: 1em 1em 0 0;
}

If your using the ribbon inside another element, add this CSS

position: relative;
z-index: 1;

Original source: http://jameskoster.co.uk/blog/pure-css-3d-ribbon/