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css实现一个页面loading的动画

程序员文章站 2022-03-18 20:09:39
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css实现一个页面loading的动画                      css实现一个页面loading的动画

 有点笨,不会生成gif图,效果就是那两张图片中的黑点点,会按顺序从无到有,形成一种loading的感觉。
完整代码如下,可直接复制看效果~

<!DOCTYPE html>
<html>
<head>
    <title></title>
</head>
<style type="text/css">
    #choiceness-loading {
        height: 400px;
        width: 400px;
        margin: 100px auto;
        position: relative;
    }
    .content1,
    .content2 {
        width: 15%;
        height: 15%;
        position: absolute;
        left: 35%;
        top: 100px;
    }
    .content1 div,
    .content2 div {
        width: 25%;
        height: 25%;
        background: #000;
        border-radius: 50%;
        position: absolute;
        animation: move 2s infinite linear
    }
    .content2 {
        transform: rotate(45deg)
    }
    .circle1 {
        left: 0;
        top: 0;
    }
    .circle2 {
        right: 0;
        top: 0
    }
    .circle3 {
        right: 0;
        bottom: 0
    }
    .circle4 {
        left: 0;
        bottom: 0
    }
    .content1 .circle1 {
        animation-delay: -0.1s
    }

    .content2 .circle1 {
        animation-delay: -0.3s
    }
    .content1 .circle2 {
        animation-delay: -0.5s
    }
    .content2 .circle2 {
        animation-delay: -0.7s
    }
    .content1 .circle3 {
        animation-delay: -0.9s
    }
    .content2 .circle3 {
        animation-delay: -1.1s
    }
    .content1 .circle4 {
        animation-delay: -1.3s
    }
    .content2 .circle4 {
        animation-delay: -1.5s
    }
    @keyframes move {
        0% {
            transform: scale(1)
        }
        50% {
            transform: scale(0)
        }
        100% {
            transform: scale(1)
        }
    }
</style>
<body>
    <div id="choiceness-loading">
        <div class="content1">
            <div class="circle1"></div>
            <div class="circle2"></div>
            <div class="circle3"></div>
            <div class="circle4"></div>
        </div>
        <div class="content2">
            <div class="circle1"></div>
            <div class="circle2"></div>
            <div class="circle3"></div>
            <div class="circle4"></div>
        </div>
    </div>
</body>
</html>