How Can I Create a Transparent Curved Shape with Rounded Sides Using HTML and CSS?

Transparent Curved Shape with Rounded Sides

Issue Description

Creating a transparent inner curved shape, similar to the one depicted in the provided image, is proving to be difficult. The current implementation, which leverages HTML and CSS, fails to produce the desired level of transparency.

CSS Implementation

The CSS implementation in the provided code uses a combination of border-radius, transform, and white background color to create the curved shape. However, the background color prevents the transparency that is desired.

SVG Implementation

Using SVG, it is possible to achieve the desired transparency by creating an empty path and filling it with the desired gradient. This approach relies on vector graphics, ensuring crisp and scalable shapes.

CSS-Only Solution

Another method involves using radial-gradient to create a transparent curved shape. This approach involves positioning multiple gradients to create the illusion of a curve, while leaving the background transparent.

Improved Implementation

An improved implementation, leveraging CSS, is provided at https://css-shape.com/inner-curve/. This solution offers customizable variables to adjust the shape and position, allowing for greater flexibility.

Conclusion

The original issue of creating a transparent curved shape with rounded sides has multiple solutions, including using SVG, CSS-only gradients, or the improved CSS implementation provided. These solutions offer various levels of flexibility and scalability, enabling developers to create the desired curved shapes in a transparent manner.

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