风琴加载动画-CFANZ编程社区

HTML部分

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>加载动画</title>
    <link rel="stylesheet" href="风琴加载动画.css">
</head>
<body>
<h1>等待加载</h1>
<div class="loading">
    <!--  --x是自定义属性  -->
    <div style="--x:0"></div>
    <div style="--x:1"></div>
    <div style="--x:2"></div>
    <div style="--x:3"></div>
    <div style="--x:4"></div>
    <div style="--x:5"></div>
</div>
</body>
</html>

CSS部分

*{
    /*初始化 取消页面内外边距*/
    margin: 0;
    padding: 0;
    /*这个是告诉浏览器：你想要设置的边框和内边距的值是包含在总宽高内的值包含在总宽高内的*/
    box-sizing: border-box;
}
body{
    /*100%窗口高度*/
    height: 100vh;
    /*弹性布局 水平垂直剧中*/
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #eef1f5;
}
.loading{
    display: flex;
    /*水平显示*/
    flex-direction: row;
}
.loading div{
    position: relative;
    width: 40px;
    height: 200px;
    /*渐变背景*/
    background: linear-gradient(to bottom,rgba(0,0,0,0.05),#eef1f5);
    margin: 20px;
    border-radius: 20px;
    border: 2px solid #eef1f5;
    /*阴影*/
    box-shadow: 15px 15px 20px rgba(0,0,0,0.1),
    -15px -15px 20px #fff,
    inset -5px -5px 5px rgba(255,255,255,0.5),
    inset 5px 5px 5px rgba(0,0,0,0.5);
    /*溢出隐藏*/
    overflow: hidden;
}
.loading div::before{
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    box-shadow: inset -5px -5px 5px rgba(0,0,0,0.1),
                0 420px 0 400px lightskyblue;
    /*执行动画：动画名称 时长 加速后减速 无限次播放*/
    animation: animate 2s ease-in-out infinite;
    /*动画延迟 通过var函数获取自定义属性--x,再由calc函数计算得出每个元素的动画延迟时间*/
    animation-delay: calc(var(--x) * -0.3s);
    /*初始化时向上移动160px*/
    transform: translateY(160px);
}
/*定义动画*/
@keyframes animate {
    0% {
        transform: translateY(160px);
        /*hue-rotate是颜色滤镜,可以设置不同的度数来改颜色*/
        filter: hue-rotate(0deg);
    }
    50%{
        transform: translateY(0px);
        filter: hue-rotate(180deg);
    }
    100%{
        transform: translateY(160px);
        filter: hue-rotate(360deg);
    }
}
h1{
    display: block;
    position: absolute;
    top: 320px;
    left: 900px;
}