How to use CSS to efficiently achieve various concave effects?

CSS creates a cool concave effect: a variety of methods to explain

This article will introduce a variety of CSS techniques to help you easily achieve various concave effects on your web page. Recently, a developer asked in the forum how to create a specific concave shape with CSS. Although no specific parameters are provided, we can achieve similar effects through various methods.

An efficient and flexible approach is to combine SVG and clip-path attributes. clip-path allows us to crop element content with various shapes, while SVG provides powerful tools for creating complex shapes. You can easily achieve the desired effect by defining a concave path in SVG and applying it as the value of clip-path to the target element.

For example, we can create an SVG element, define a path that depicts the concave shape, and then apply url() of that SVG element as the clip-path attribute value to the target element. In this way, the element content will be limited to the shape defined by the SVG path, thus presenting a concave effect. It should be noted that this method requires understanding of SVG path syntax.

Of course, depending on the complexity of the concave shape, other CSS technologies can also be considered, such as combining border-radius and box-shadow to simulate depressions, or using pseudo-elements and multiple borders to superimpose them. But for complex concave shapes, these methods may be more cumbersome. Which method you choose ultimately depends on the specific shape and requirements.

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