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HomeWeb Front-endCSS TutorialCSS Animation: How to Achieve the Flashing Effect of Elements

CSS Animation: How to Achieve the Flashing Effect of Elements

Nov 21, 2023 pm 04:51 PM
css animation: flashing effectcss flash animationAchieve element flashing effect

CSS Animation: How to Achieve the Flashing Effect of Elements

CSS Animation: How to Implement Element Flashing Effect

The flickering effect is a common animation effect that can be achieved by changing the transparency of the element. In CSS, animations and keyframes can be used to create a flickering effect on elements. This article will introduce how to achieve the flickering effect of elements and provide specific code examples.

  1. Use @keyframes to define key frames

To create a flashing effect of an element, we first need to use the @keyframes rule to define key frames. Keyframes are key states in animation where we can specify the style of an element.

The following is a simple keyframe definition example:

@keyframes blink {
  0% { opacity: 1; } /* 初始状态,完全显示 */
  50% { opacity: 0; } /* 中间状态,完全隐藏 */
  100% { opacity: 1; } /* 结束状态,完全显示 */
}

In the above code, we define a keyframe animation named "blink" to achieve blinking by changing the transparency of the element Effect. Keyframes contain three states, namely the initial state, the intermediate state and the end state.

  1. Apply animation to elements

After we define the keyframes, we need to apply animation to the elements that require a flickering effect. You can use the animation attribute to achieve this functionality.

Here is an example of applying a blink animation to an element:

div {
  animation: blink 2s infinite;
}

In the above code, we apply the animation named "blink" to the div element. The animation property specifies the name, duration, and number of loops of the animation. In the example, the animation will last 2 seconds and loop infinitely.

  1. Customize the flickering effect

By changing the percentage and style of keyframes, we can customize different flickering effects. For example, we can change the frequency of flickering, transparency, and the duration of the animation.

The following is an example of a customized blinking effect:

@keyframes custom-blink {
  0% { opacity: 1; } /* 初始状态,完全显示 */
  25% { opacity: 0.5; } /* 闪烁中间状态,半透明 */
  50% { opacity: 0; } /* 中间状态,完全隐藏 */
  75% { opacity: 0.5; } /* 闪烁中间状态,半透明 */
  100% { opacity: 1; } /* 结束状态,完全显示 */
}

div {
  animation: custom-blink 3s infinite;
}

In the above code, we have customized a blinking animation named "custom-blink". In this animation, we subdivide the flickering state into four stages, and achieve different flickering effects by changing the transparency of different states.

Summary

By using CSS animations and keyframes, we can easily achieve the flickering effect of elements. The key is to define the keyframes in @keyframes and apply the animation to the elements that need the flickering effect.

I hope this article can help you understand how to achieve the flickering effect of elements, and provide specific code examples to help you better apply it in actual projects.

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