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How to Create an Animated Radial Gradient Shine Effect with CSS?

Linda Hamilton
Release: 2024-12-02 14:31:16
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How to Create an Animated Radial Gradient Shine Effect with CSS?

How to Animate a Gradient Shine Effect with CSS

Question:

Users seek to create an animated radial-gradient shine effect for a div box, similar to a highlight that moves from left to right. However, they have not found any resources that provide the desired results and are uncertain about the best approach.

Answer:

The solution employs gradient manipulation and animation techniques to achieve the desired effect. The core principle is to duplicate the gradient and adjust the color stop values by half to maintain the original gradient's visual appearance. By subsequently animating the gradient's position from left to right, the shining effect is achieved.

The implementation involves the following steps:

  1. Create a radial gradient with the desired colors and positioning, ensuring that the first color occupies 0% and the second color occupies 4%, as demonstrated in the CSS code:
background: radial-gradient(farthest-corner at top, #FFFFFF 0%, #ffb3ff 4%, #ff33ff 12.25%, #800080 31.25%, #b300b3 50%) top right/200% 200%;
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  1. Position the gradient using the background-position property. By default, the positioning is set to the top-right corner.
  2. Create an animation using keyframes to move the gradient from left to right. The to rule in the colorChange animation sets the final position of the gradient, which is the top-left corner.
@keyframes colorChange {
  to {
    background-position:top left;
  }
}
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By implementing this approach, the gradient shine effect can be animated to move smoothly from left to right, creating the desired highlight that radiates across the div box.

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