欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  web前端

CSS3动画(一):5种预载动画效果

程序员文章站 2022-05-11 10:25:17
...
实现如图所示的动画效果:

CSS3动画(一):5种预载动画效果

预载动画一:双旋圈

在两个不同方向旋转的圆圈。我们对内圈的转速定义了一个CSS代码,即内圈比外圈的速率快2倍。
实现如图所示:

CSS3动画(一):5种预载动画效果

html代码:

<body style="background: #ffb83c;">
    <p id="preloader-1">
        <span></span>
        <span></span>
    </p></body>

css代码:

#preloader-1{
    position: relative;
}#preloader-1 span{
    position: absolute;
    border:8px solid #fff;
    border-top:8px solid transparent;
    border-radius: 999px;
}#preloader-1 span:nth-child(1){
    width:80px;
    height: 80px;
    animation: spin-1 2s infinite linear;
}#preloader-1 span:nth-child(2){
    top:20px;
    left:20px;
    width:40px;
    height: 40px;
    animation: spin-2 1s infinite linear;
}@keyframes spin-1{
    0%{transform: rotate(360deg); opacity: 1.0;}
    50%{transform: rotate(180deg); opacity: 0.5;}
    100%{transform: rotate(0deg);opacity: 0;}}
@keyframes spin-2{
    0%{transform: rotate(0deg); opacity: 0.5;}
    50%{transform: rotate(180deg); opacity: 1;}
    100%{transform: rotate(360deg);opacity: 0.5;}}

预载动画二:交错圈

两个圆圈进行横向交错来回移动。每个圆圈都设置了单独的反向移动动画参数。
效果:

CSS3动画(一):5种预载动画效果

html代码:

<body style="background: #4ad3b4;">
    <p id="preloader-2">
        <span></span>
        <span></span>
    </p></body>

css代码:

#preloader-2{
    position: relative;
}#preloader-2 span{
    position: absolute;
    width:30px;
    height: 30px;
    background: #fff;
    border-radius: 999px;
}#preloader-2 span:nth-child(1){
    animation: cross-1 1.5s infinite linear;
}#preloader-2 span:nth-child(2){
    animation: cross-2 1.5s infinite linear;
}@keyframes cross-1{
    0%{transform: translateX(0); opacity: 0.5;}
    50%{transform: translateX(80px); opacity: 1;}
    100%{transform: translateX(0);opacity: 0.5;}}
@keyframes cross-2{
    0%{transform: translateX(80px); opacity: 0.5;}
    50%{transform: translateX(0); opacity: 1;}
    100%{transform: translateX(80px);opacity: 0.5;}}

预载动画三:旋转圈

效果:

CSS3动画(一):5种预载动画效果

html代码:

<body style="background: #ab69d9;">
    <p id="preloader-3">
        <span></span>
    </p></body>

css代码:

#preloader-3{
    position: relative;
    width:80px;
    height: 80px;
    border:4px solid rgba(255,255,255,.25);
    border-radius: 999px;
    
}#preloader-3 span{
    position: absolute;
    width:80px;
    height:80px;
    border:4px solid transparent;
    border-top:4px solid #fff;
    border-radius: 999px;
    top:-4px;
    left:-4px;
    animation: rotate 1s infinite linear;
}@keyframes rotate{
    0%{transform: rotate(0deg);}
    100%{transform: rotate(360deg);}}

预载动画四:跳动圈

这是一种墨西哥波浪纹的动画效果,通过设置不同圆圈之间的延迟参数来实现。
效果:

CSS3动画(一):5种预载动画效果

html代码:

<body style="background: #c1d64a;">
    <p id="preloader-4">
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
    </p></body>

css代码:

#preloader-4{
    position: relative;
}#preloader-4 span{
    position:absolute;
    width:16px;
    height: 16px;
    border-radius: 999px;
    background: #fff;
    animation: bounce 1s infinite linear;
}#preloader-4 span:nth-child(1){
    left:0;
    animation-delay: 0s;
}#preloader-4 span:nth-child(2){
    left:20px;
    animation-delay: 0.25s;
}#preloader-4 span:nth-child(3){
    left:40px;
    animation-delay: 0.5s;
}#preloader-4 span:nth-child(4){
    left:60px;
    animation-delay: 0.75s;
}#preloader-4 span:nth-child(5){
    left:80px;
    animation-delay: 1.0s;
}@keyframes bounce{
    0%{transform: translateY(0px);opacity: 0.5;}
    50%{transform: translateY(-30px);opacity: 1.0;}
    100%{transform: translateY(0px);opacity: 0.5;}}

预载动画五:雷达圈

一种雷达辐射效果,给3个span elements设置相同的淡入淡出效果,再予每个稍微延迟下即可实现。
效果:

CSS3动画(一):5种预载动画效果

html代码:

<body style="background: #f9553f;">
    <p id="preloader-5">
        <span></span>
        <span></span>
        <span></span>
    </p></body>

css代码:

#preloader-5{
    position: relative;
}#preloader-5 span{
    position:absolute;
    width:50px;
    height: 50px;
    border:5px solid #fff;
    border-radius: 999px;
    opacity: 0;
    animation: radar 2s infinite linear;
}#preloader-5 span:nth-child(1){
    animation-delay: 0s;
}#preloader-5 span:nth-child(2){
    
    animation-delay: 0.66s;
}#preloader-5 span:nth-child(3){
    animation-delay: 1.33s;
}@keyframes radar{
    0%{transform: scale(0);opacity: 0;}
    25%{transform: scale(0);opacity: 0.5;}
    50%{transform: scale(1);opacity: 1.0;}
    75%{transform: scale(1.5);opacity: 0.5;}
    100%{transform: scale(2);opacity: 0;}}

更多CSS3动画(一):5种预载动画效果 相关文章请关注PHP中文网!

相关标签: CSS3