How to Create Hoverable Triangles with Background Images in CSS3?

Creating CSS3 Triangles with Background Images for Seamless Triangle-Shaped Links

Introduction

Enhancing your website's aesthetics with interactive triangle-shaped links can elevate its visual appeal. With CSS3, you can effortlessly create these geometric shapes and incorporate background images to add depth and charm.

The Challenge of Transparent Hover Zones

However, a common issue arises when creating triangles: the inability to hover over the transparent portions of the background images. This hurdle prevents visitors from accessing the underlying links.

The Solution: Leveraging Child Images

To overcome this challenge, consider using child images for your links instead of background images. By implementing this approach, you can independently skew the parent triangle elements while maintaining the alignment of their child image links.

Code Implementation

Here's the code that demonstrates how to implement this technique:

HTML:

<div>
<p><strong>Relevant CSS:</strong></p>
<pre class="brush:php;toolbar:false">.pageOption {
  overflow: hidden;
  position: relative;
  width: 40em; height: 27em;
}
.option, .option img { width: 100%; height: 100%; }
.option {
  overflow: hidden;
  position: absolute;  
  /* arctan(27 / 40) = 34.01935deg 
   * need to skew by 90deg - 34.01935deg = 55.98065deg
  */
  transform: skewX(-55.98deg);
}
.option:first-child {
  left: -.25em;
  transform-origin: 100% 0;
}
.option:last-child {
  right: -.25em;
  transform-origin: 0 100%;
}
.option img {
  transform: skewX(55.98deg);
  transform-origin: inherit;
}

Conclusion

By employing child images for your links and skillfully aligning them with skewed triangle elements, you can achieve seamless hoverability over the entire triangle shapes. This technique enhances the interactivity and visual appeal of your website, providing a more engaging user experience.