效果：
代码实现：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Loading</title>
<style>
* {
margin: 0em;
padding: 0em;
}
.loader {
position: absolute;
top: 50%;
left: 50%;
-webkit-transform: translate(-50%, -50%);
-moz-transform: translate(-50%, -50%);
-mos-transform: translate(-50%, -50%);
-o-transform: translate(-50%, -50%);
transform: translate(-50%, -50%);
text-align: center;
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
cursor: default;
}
.text {
position: absolute;
left: -1.3em;
top: -1.7em;
-webkit-animation: text 2s infinite;
-moz-animation: text 2s infinite;
-moz-animation: text 2s infinite;
-ms-animation: text 2s infinite;
-o-animation: text 2s infinite;
animation: text 2s infinite;
}
.horizontal {
position: absolute;
top: 0em;
left: 0em;
-webkit-transform: rotate(0deg);
-moz-transform: rotate(0deg);
-ms-transform: rotate(0deg);
-o-transform: rotate(0deg);
transform: rotate(0deg);
}
.circlesup {
position: absolute;
top: -4.7em;
right: 12.1em;
}
.circle {
position: absolute;
width: 15em;
height: 15em;
-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
-ms-transform: rotate(45deg);
-o-transform: rotate(45deg);
transform: rotate(45deg);
-webkit-animation: orbit 2s infinite;
-moz-animation: orbit 2s infinite;
-moz-animation: orbit 2s infinite;
-ms-animation: orbit 2s infinite;
-o-animation: orbit 2s infinite;
animation: orbit 2s infinite;
z-index: 5;
}
.circle:after {
content: '';
position: absolute;
width: 2em;
height: 2em;
-webkit-border-radius: 100%;
-moz-border-radius: 100%;
-ms-border-radius: 100%;
-o-border-radius: 100%;
border-radius: 100%;
background: #17b2f0;
}
.circle:nth-child(2) {
-webkit-animation-delay: 100ms;
-moz-animation-delay: 100ms;
-ms-animation-delay: 100ms;
-o-animation-delay: 100ms;
animation-delay: 100ms;
z-index: 4;
}
.circle:nth-child(2):after {
background: #59b9e0;
-webkit-transform: scale(0.8, 0.8);
-moz-transform: scale(0.8, 0.8);
-ms-transform: scale(0.8, 0.8);
-o-transform: scale(0.8, 0.8);
transform: scale(0.8, 0.8);
}
.circle:nth-child(3) {
-webkit-animation-delay: 225ms;
-moz-animation-delay: 225ms;
-ms-animation-delay: 225ms;
-o-animation-delay: 225ms;
animation-delay: 225ms;
z-index: 3;
}
.circle:nth-child(3):after {
background: #ffa489;
-webkit-transform: scale(0.6, 0.6);
-moz-transform: scale(0.6, 0.6);
-ms-transform: scale(0.6, 0.6);
-o-transform: scale(0.6, 0.6);
transform: scale(0.6, 0.6);
}
.circle:nth-child(4) {
-webkit-animation-delay: 350ms;
-moz-animation-delay: 350ms;
-ms-animation-delay: 350ms;
-o-animation-delay: 350ms;
animation-delay: 350ms;
z-index: 2;
}
.circle:nth-child(4):after {
background: #ff6d37;
-webkit-transform: scale(0.4, 0.4);
-moz-transform: scale(0.4, 0.4);
-ms-transform: scale(0.4, 0.4);
-o-transform: scale(0.4, 0.4);
transform: scale(0.4, 0.4);
}
.circle:nth-child(5) {
-webkit-animation-delay: 475ms;
-moz-animation-delay: 475ms;
-ms-animation-delay: 475ms;
-o-animation-delay: 475ms;
animation-delay: 475ms;
z-index: 1;
}
.circle:nth-child(5):after {
background: #DB2F00;
-webkit-transform: scale(0.2, 0.2);
-moz-transform: scale(0.2, 0.2);
-ms-transform: scale(0.2, 0.2);
-o-transform: scale(0.2, 0.2);
transform: scale(0.2, 0.2);
}
.circlesdwn {
position: absolute;
top: 2.5em;
right: -13.5em;
-webkit-transform: rotate(180deg);
-moz-transform: rotate(180deg);
-ms-transform: rotate(180deg);
-o-transform: rotate(180deg);
transform: rotate(180deg);
}
.vertical {
position: absolute;
top: -1.84em;
left: -0.4em;
-webkit-transform: rotate(90deg);
-moz-transform: rotate(90deg);
-ms-transform: rotate(90deg);
-o-transform: rotate(90deg);
transform: rotate(90deg);
}
@-webkit-keyframes text {
0% {
transform: scale(.2, .2);
animation-timing-function: ease-out;
}
50% {
transform: scale(1, 1);
animation-timing-function: ease-out;
}
60% {
transform: scale(1, 1);
animation-timing-function: ease-out;
}
100% {
transform: scale(.2, .2);
}
}
@keyframes text {
0% {
transform: scale(.2, .2);
animation-timing-function: ease-out;
}
50% {
transform: scale(1, 1);
animation-timing-function: ease-out;
}
60% {
transform: scale(1, 1);
animation-timing-function: ease-out;
}
100% {
transform: scale(.2, .2);
}
}
@-webkit-keyframes orbit {
0% {
transform: rotate(45deg);
}
5% {
transform: rotate(45deg);
animation-timing-function: ease-out;
}
70% {
transform: rotate(405deg);
animation-timing-function: ease-in;
}
100% {
transform: rotate(405deg);
}
}
@keyframes orbit {
0% {
transform: rotate(45deg);
}
5% {
transform: rotate(45deg);
animation-timing-function: ease-out;
}
70% {
transform: rotate(405deg);
animation-timing-function: ease-in;
}
100% {
transform: rotate(405deg);
}
}
#content {
width: 100%;
height: 100%;
opacity: 0;
transition: opacity 0.5s;
}
#content iframe {
width: 100%;
height: -webkit-fill-available;
}
</style>
</head>
<body>
<div class="loader" id="loader">
<div class="text">Loading...</div>
<div class="horizontal">
<div class="circlesup">
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
</div>
<div class="circlesdwn">
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
</div>
</div>
<div class="vertical">
<div class="circlesup">
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
</div>
<div class="circlesdwn">
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
</div>
</div>
</div>
<div id="content">
<iframe src="//www.albertyy.com"></iframe>
</div>
</body>
<script>
document.onreadystatechange = loadingChange; //当页面加载状态改变的时候执行这个方法.
function loadingChange() {
if (document.readyState == "complete") { //当页面加载状态为完全结束时进入
document.getElementById("loader").style.display = "none";
document.getElementById("content").style.opacity = 1;
}
}
</script>
</html>