How can I create a responsive skewed element with a rounded border using CSS?

Stylizing Elements with Skew and Inner Rounded Borders

In a bid to replicate a graphical design using CSS, a user has encountered challenges in achieving a responsive layout with desirable aesthetic qualities. The original design features a skewed element with a rounded border, and the user's current CSS approach involves two elements to achieve the desired result.

The user's code involves creating a before element for a rounded top and skew effect, and an after element for the side skew. However, this approach poses limitations in achieving responsiveness.

To address this issue, one can opt for a simplified CSS approach that uses a single element and relies on CSS skew and border-radius properties to achieve the desired effect.

The revised CSS implementation is as follows:

<code class="css">.header {
  border-top: 20px solid blue;
  height:100px;
  position: relative;
  overflow: hidden;
}
.header:before,
.header:after {
  content: "";
  vertical-align:top;
  display: inline-block;
  transform-origin: top right;
  transform: skew(-40deg);
}

.header:before {
  height: 100%;
  width: 50%;
  border-radius: 0 0 20px 0;
  background: blue;
}

.header:after {
  height: 20px;
  width: 20px;
  margin-left:-1px;
  background: radial-gradient(circle at bottom right, transparent 68%, blue 73%);
}</code>

With this approach, a single element is created and styled using skew and border-radius properties. The before element creates the blue skewed background, and the after element adds the inner rounded border using a radial gradient. This simplified approach allows for greater responsiveness and flexibility.

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