CodePen Embed - border-only triangle

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

.triangle {
  width: 200px;
  aspect-ratio: 1;
  clip-path: polygon(0 0,100% 100%,0 100%,0 0,5% 10%,5% 95%,90% 95%,5% 10%);
  background: linear-gradient(90deg,red,lightblue);
}

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This Pen is owned by Temani Afif on CodePen.

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