CSS3 animation (1): 5 preload animation effects-CSS Tutorial-php.cn

CSS3 animation (1): 5 preload animation effects

高洛峰

Release： 2017-02-17 13:21:01

Original

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Achieve the animation effect as shown in the picture:

CSS3动画（一）：5种预载动画效果

Preload animation 1: Double rotating circle

A circle rotating in two different directions. We define a CSS code for the speed of the inner ring, that is, the speed of the inner ring is 2 times faster than that of the outer ring.
The implementation is shown in the figure:

CSS3动画（一）：5种预载动画效果

html code:

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

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css code:

#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;}}

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Preload animation two: staggered circles

Two circles move back and forth horizontally. Each circle has its own reverse movement animation parameters set.
Effect:

CSS3动画（一）：5种预载动画效果

html code:

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

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css code:

#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;}}

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Preload animation three: rotating circle

Effect:

CSS3动画（一）：5种预载动画效果

html code:

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

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css code:

#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);}}

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Preload animation four: jumping circle

This is a Mexican wave pattern animation effect, achieved by setting the delay parameters between different circles.
Effect:

CSS3动画（一）：5种预载动画效果

html code:

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

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css code:

#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;}}

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Preload animation five: radar circle

A radar radiation effect, set the same fade in and fade out effect for 3 span elements , and then each can be achieved with a slight delay.
Effect:

CSS3动画（一）：5种预载动画效果

html code:

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

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css code:

#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;}}

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