How to Create a Seamless Wave-Shaped Element with Border and Background in CSS3?

Implementing a Wave-Shaped Element with CSS3

In an attempt to create a wave-shaped element using CSS3 Shapes, you may have encountered limitations in accessing the border and background properties. To achieve a seamless wave shape with a border and background, consider substituting the div element (".panel") with SVG.

Solution

Utilizing SVG allows you to shape the wave using the "path" element. To create a wave shape:

1. Define the path's coordinates using the "d" attribute.
2. Set the "fill" attribute for the background color and a "stroke" attribute for the border.
3. Adjust the "stroke-width" attribute to control the thickness of the border.
4. Position the SVG element using the "float" property to achieve the desired layout.

Example Code

`

This is a panel
`

Positioning

To ensure the wave-shaped element overlays the content, set a negative "z-index" for the container element:

``

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