How Can I Create a One-Sided CSS3 Skew Transform Effect with a Transparent Area?

CSS3 Skew Transformation on One Side

Understanding how to create a "CSS3 Transform Skew One Side" effect can be useful for various web design projects. However, it's important to note that simply applying a skew transform may not produce the desired results when using an image for the background.

Addressing the Problem

In your specific case, you require a CSS3 transform to skew only one side of an image while maintaining a transparent skewed area. The provided solution using solid borders won't achieve this effect effectively.

The Solution: Nested Div with Opposite Skew

To achieve the desired effect, consider utilizing a nested div for the image and applying a skew value opposite to that of the parent div. For instance, if you have applied a 20-degree skew to the parent container, give the nested (image) div a skew value of -20 degrees.

Example Code:

To demonstrate, here's an example using a container and nested divs:

.container {
  overflow: hidden;
}

#parallelogram {
  width: 150px;
  height: 100px;
  margin: 0 0 0 -20px;
  transform: skew(20deg);
  background: red;
  overflow: hidden;
  position: relative;
}

.image {
  background: url(http://placekitten.com/301/301);
  position: absolute;
  top: -30px;
  left: -30px;
  right: -30px;
  bottom: -30px;
  transform: skew(-20deg);
}

This code will create a 20-degree skew on the red parallelogram container. Inside it, an image will be placed in a nested div with a -20-degree skew, effectively reversing the skew applied to the parent container and revealing the transparent skewed area behind it.

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