Untitled

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>dom</title>

    <style>
        .big{
            width: 100%;
            height: 700px;
            position: relative;
            padding: 20px 15px;
            margin: 0;
            background-color: #333;
        }
        .box{
            width: 200px;
            height: 200px;
            box-sizing: border-box;
            border: 1px solid #cb6341;
            position: fixed;
            left: 50%;
            right: 50%;
            margin-left: -100px;
        }
        .box:after, .box:before{
            content: "";
            width: 110%;
            height: 100%;
            box-sizing: border-box;
            border: 2px solid;
            position: absolute;
            top: -5%;
            left: -5%;
            animation: boxBorder 6s linear infinite;
        }
        .box:before{
            animation-delay: -3s;
        }
        .box .icon{
            position: absolute;
            top: 50%;
            left: 50%;
            width: 100px;
            height: 100px;
            margin-top: -50px;
            margin-left: -50px;
            animation: iconBox 3s linear infinite;
        }
        .box .icon:after,.box .icon:before{
            content: "";
            width: 40%;
            height: 100%;
            box-sizing: border-box;
            border-radius: 50%;
            border: 2px solid #fff;
            position: absolute;
            top: 0;
            left: 30px;
            animation: iconBorder 3s linear infinite;
        }
        .box .icon:after{
            transform: rotate(60deg);
        }
        .box .icon:before{
            transform: rotate(-60deg);
        }
        .box .icon2:before{
            transform: rotate(0deg);
        }
        .box .icon2:after{
            height: 10px;
            width: 10px;
            background-color: #fff;
            transform: translate(12px,-6px);
            border: 3px solid #333;
            box-sizing: content-box;
            animation: iconYuan 3s linear infinite 0.6s;
        }

        /* 动画开始 */
        @keyframes iconBox {
            0%{
                transform: rotate(0deg);
            }
            100%{
                transform: rotate(360deg);
            }
        }
        @keyframes iconBorder {
            0%{
                border-color: #fff;
            }
            30%{
                border-color: yellow;
            }
            60%{
                border-color: blue;
            }
            100%{
                border-color: red;
            }
        }
        @keyframes iconYuan {
            0%{
                background-color: #fff;
            }
            30%{
                background-color: yellow;
            }
            60%{
                background-color: blue;
            }
            100%{
                background-color: red;
            }
        }
        @keyframes boxBorder {
            0%{
                border-color: #fff;
                clip: rect(0, 220px, 2px ,0);
            }
            25%{
                border-color: yellow;
                clip: rect(0, 2px, 220px ,0);
            }
            50%{
                border-color: blue;
                clip: rect(218px, 220px, 220px ,0);
            }
            75%{
                border-color: green;
                clip: rect(0, 220px, 220px ,218px);
            }
            100%{
                border-color: aqua;
                clip: rect(0, 220px, 2px ,0);
            }
        }
    </style>
</head>
<body>

    <div class="box">
        <div class="icon icon1"></div>
        <div class="icon icon2"></div>
    </div>

    <div id="dd">
        <span>sb</span>
        <span>sb</span>
        <span>sb</span>
        <span>sb</span>
        <span>sb</span>
        <span>sb</span>
    </div>


    <script>
        var a = ["小明","小刚","小红","小方","小王"];
        var b = a.filter(function(x){
            return x!="小明"
        });
    </script>

</body>
</html>