网页Loading动画添加教程

第一步：创建CSS样式文件

新建一个名为loading.css的样式文件，将以下CSS代码放入其中，然后在页面中引用这个文件：

#Loadanimation {
    background-color: #fff;
    height: 100%;
    width: 100%;
    position: fixed;
    z-index: 1;
    margin-top: 0px;
    top: 0px;
}

#Loadanimation-center {
    width: 100%;
    height: 100%;
    position: relative;
}

#Loadanimation-center-absolute {
    position: absolute;
    left: 50%;
    top: 50%;
    height: 200px;
    width: 200px;
    margin-top: -100px;
    margin-left: -100px;
}

.ymwu_object {
    -moz-border-radius: 50% 50% 50% 50%;
    -webkit-border-radius: 50% 50% 50% 50%;
    border-radius: 50% 50% 50% 50%;
    position: absolute;
    border-left: 5px solid #87CEFA;
    border-right: 5px solid #FFC0CB;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    -webkit-animation: animate 2.5s infinite;
    animation: animate 2.5s infinite;
}

#ymwu_one {
    left: 75px;
    top: 75px;
    width: 50px;
    height: 50px;
}

#ymwu_two {
    left: 65px;
    top: 65px;
    width: 70px;
    height: 70px;
    -webkit-animation-delay: 0.1s;
    animation-delay: 0.1s;
}

#ymwu_three {
    left: 55px;
    top: 55px;
    width: 90px;
    height: 90px;
    -webkit-animation-delay: 0.2s;
    animation-delay: 0.2s;
}

#ymwu_four {
    left: 45px;
    top: 45px;
    width: 110px;
    height: 110px;
    -webkit-animation-delay: 0.3s;
    animation-delay: 0.3s;
}

@-webkit-keyframes animate {
    50% {
        -ms-transform: rotate(180deg);
        -webkit-transform: rotate(180deg);
        transform: rotate(180deg);
    }

    100% {
        -ms-transform: rotate(0deg);
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
}

@keyframes animate {
    50% {
        -ms-transform: rotate(180deg);
        -webkit-transform: rotate(180deg);
        transform: rotate(180deg);
    }

    100% {
        -ms-transform: rotate(0deg);
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
}

第二步：添加HTML结构

将以下代码添加到网站的头部文件（通常是header.php）中：

<div id="Loadanimation" style="z-index:999999;">
    <div id="Loadanimation-center">
        <div id="Loadanimation-center-absolute">
            <div class="ymwu_object" id="ymwu_four"></div>
            <div class="ymwu_object" id="ymwu_three"></div>
            <div class="ymwu_object" id="ymwu_two"></div>
            <div class="ymwu_object" id="ymwu_one"></div>
        </div>
    </div>
</div>
<script>
$(function(){ 
    $("#Loadanimation").fadeOut(3000); 
});
</script>