如何通过纯CSS实现预加载动画效果？
效果图
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<style>
#loading {
position:absolute;
left:0;
top:0;
width:100%;
height:100%;
background: #121220;
overflow:hidden;
z-index:9999;
}
/*加载圈*/
.spinner {
margin:0 auto;
width:60px;
height:60px;
position:relative;
top:40%;
}
.container1 > div,.container2 > div,.container3 > div {
width:15px;
height:15px;
background-color:#fff;
border-radius:100%;
position:absolute;
-webkit-animation:bouncedelay 1.2s infinite ease-in-out;
animation:bouncedelay 1.2s infinite ease-in-out;
-webkit-animation-fill-mode:both;
animation-fill-mode:both;
}
.spinner .spinner-container {
position:absolute;
width:100%;
height:100%;
}
.container2 {
-webkit-transform:rotateZ(45deg);
transform:rotateZ(45deg);
}
.container3 {
-webkit-transform:rotateZ(90deg);
transform:rotateZ(90deg);
}
.circle1 {
top:0;
left:0;
}
.circle2 {
top:0;
right:0;
}
.circle3 {
right:0;
bottom:0;
}
.circle4 {
left:0;
bottom:0;
}
.container2 .circle1 {
-webkit-animation-delay:-1.1s;
animation-delay:-1.1s;
}
.container3 .circle1 {
-webkit-animation-delay:-1.0s;
animation-delay:-1.0s;
}
.container1 .circle2 {
-webkit-animation-delay:-0.9s;
animation-delay:-0.9s;
}
.container2 .circle2 {
-webkit-animation-delay:-0.8s;
animation-delay:-0.8s;
}
.container3 .circle2 {
-webkit-animation-delay:-0.7s;
animation-delay:-0.7s;
}
.container1 .circle3 {
-webkit-animation-delay:-0.6s;
animation-delay:-0.6s;
}
.container2 .circle3 {
-webkit-animation-delay:-0.5s;
animation-delay:-0.5s;
}
.container3 .circle3 {
-webkit-animation-delay:-0.4s;
animation-delay:-0.4s;
}
.container1 .circle4 {
-webkit-animation-delay:-0.3s;
animation-delay:-0.3s;
}
.container2 .circle4 {
-webkit-animation-delay:-0.2s;
animation-delay:-0.2s;
}
.container3 .circle4 {
-webkit-animation-delay:-0.1s;
animation-delay:-0.1s;
}
@-webkit-keyframes bouncedelay {
0%,80%,100% {
-webkit-transform:scale(0.0)
}
40% {
-webkit-transform:scale(1.0)
}
}
@keyframes bouncedelay {
0%,80%,100% {
transform:scale(0.0);
-webkit-transform:scale(0.0);
}
40% {
transform:scale(1.0);
-webkit-transform:scale(1.0);
}
}
</style>
<body>
<div id="loading" >
<div class="spinner">
<div class="spinner-container container1">
<div class="circle1"></div>
<div class="circle2"></div>
<div class="circle3"></div>
<div class="circle4"></div>
</div>
<div class="spinner-container container2">
<div class="circle1"></div>
<div class="circle2"></div>
<div class="circle3"></div>
<div class="circle4"></div>
</div>
<div class="spinner-container container3">
<div class="circle1"></div>
<div class="circle2"></div>
<div class="circle3"></div>
<div class="circle4"></div>
</div>
</div>
</div>
</body>
总结
以上所述是小编给大家介绍的纯CSS实现预加载动画效果，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对路饭网站的支持！
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