CodePen Embed - Triangle using borders

<div class="triangle"></div>

.triangle {
  width: 0;
  height: 0;
  border: 150px solid transparent;
  border-top: 0;
  border-bottom: 300px solid red;
}

This Pen is owned by Alvaro Montoro on CodePen.

This Pen doesn't use any external CSS resources.

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