How can I transform a cutout top into a curved top background using CSS?

Converting a Cutout Top to a Curved Top Background

In this code-based task, we aim to transform a cutout positioned on the right side of a block into a curved shape sitting gracefully atop the block.

The current code snippet involves a .box containing a .top element. While the desired effect is to have the cutout on top, the code places it on the right. So, let's dive into the revised version:

<code class="css">.box {
  margin-top: 90px;
  width: 200px;
  height: 100px;
  background: white;
  position: relative;
}

.box:before,
.box:after {
  content: "";
  position: absolute;
  bottom: 100%;
  width: 50%;
  left: 0;
  height: 80px;
  background:
    radial-gradient(50% 100% at bottom left, #fff 98%, #0000) top,
    radial-gradient(50% 100% at top right, #0000 98%, #fff) bottom;
  background-size: 100% 50%;
  background-repeat: no-repeat;
}

.box:after {
  transform-origin: right;
  transform: scaleX(-1);
}

body {
  background: pink;
}</code>

Key Adjustments:

• We've set margin-top on .box to at least match the height of the pseudo-elements, ensuring the cutout doesn't overlap the block.
• The pseudo-elements are now positioned at the bottom of .box using bottom: 100%.
• The height of the pseudo-elements is set to 80px, which you can adjust to control the height of the curve.
• The background gradients have been modified to create the desired radial effect.

Voilà! You now have a curved cutout flowing seamlessly from the top of the block. Feel free to experiment further and create a curve that perfectly complements your design.

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