Web Front-endCSS TutorialCSS Animation Tutorial: Teach you step-by-step to achieve dynamic background effectsCSS Animation Tutorial: Teach you step-by-step to achieve dynamic background effects
CSS Animation Tutorial: Teach you step-by-step to implement dynamic background effects
In web design, animation effects can add vividness to the page and attract the user's attention. CSS animation is a way to achieve these effects. This tutorial will teach you step by step how to use CSS to achieve a moving background effect, using specific code examples to make it easier for you to understand and apply.
Step 1: Create HTML structure
First, we need to create an HTML structure containing content. Add a div element to the body tag and give it a unique id, for example:
<body> <div id="background"></div> <!-- 页面其它内容 --> </body>
Step 2: Set the basic style
Next, we need to set the basic style for this div element . In CSS, we can use "position: fixed" to fix it in the page and make it the background. And set its width and height, and background color or background image. The sample code is as follows:
#background {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-color: #f5f5f5;
}Step 3: Add animation effects
Next, we will add animation effects to this background element. Here we use CSS keyframe animation (Keyframe Animation) to achieve the jumping effect. First, we need to create an animation in CSS and define its name, duration, and movement method. The sample code is as follows:
@keyframes jump {
0% {
transform: translateX(0) translateY(0);
}
25% {
transform: translateX(10px) translateY(-10px);
}
50% {
transform: translateX(20px) translateY(0);
}
75% {
transform: translateX(10px) translateY(10px);
}
100% {
transform: translateX(0) translateY(0);
}
}
#background {
/* 其它样式 */
animation-name: jump;
animation-duration: 1s;
animation-timing-function: ease-in-out;
animation-iteration-count: infinite;
}In the above code, we define an animation named "jump", which achieves the translation effect by changing the transform attribute of the element in the process from 0% to 100%. . By adjusting the values of translateX and translateY, we can control the horizontal and vertical translation of the element. Different percentage stages correspond to different translation positions, thus forming a jumping effect.
Finally, we apply this animation to the background element, set animation-name to "jump", and control the duration of the animation by setting animation-duration, animation-timing-function and animation-iteration-count Time, movement pattern and number of repetitions.
Step 4: Test the effect
After completing the above code, refresh the page, and you will see the effect of the background elements jumping. You can adjust the parameters of the animation and the style of the background elements according to your needs to achieve the effect you want.
Summary:
Through this tutorial, we learned how to use CSS to achieve a moving background special effect. By creating the basic HTML structure, setting the style of the background elements, and using CSS keyframe animation to achieve the panning effect, we can easily create a variety of cool background animation effects.
Of course, there are more application scenarios and properties for CSS animation to explore. I hope this tutorial can help you understand and use CSS animation to add more vividness and creativity to your web design. I wish you more success in web design!
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