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/
load.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>CSS Loading Spinner</title>
    <style>
        .container {
            position: relative;
            /* 相对定位 */
            top: 50%;
            /* 上边界移动到容器的50%处 */
            transform: translateY(-50%);
            /* 向上移动自身高度的50%来达到垂直居中效果 */
            text-align: center;
            /* 文本水平居中 */
            /* line-height: 50px;  */
            background-color: red;
        }

        .loader {
            position: relative;
            /* 相对定位 */
            top: 50%;
            /* 上边界移动到容器的50%处 */
            transform: translateY(-50%);
            /* 向上移动自身高度的50%来达到垂直居中效果 */
            border: 8px solid #f3f3f3;
            /* Light grey background */
            border-top: 8px solid #3498db;
            /* Blue border */
            border-radius: 50%;
            /* Circular border */
            width: 50px;
            height: 50px;
            animation: spin 2s linear infinite;
            /* Rotate continuously */
            margin: 50px auto;
        }

        @keyframes spin {
            0% {
                transform: rotate(0deg);
            }

            100% {
                transform: rotate(360deg);
            }
        }


        /* 为元素  after  before 应用 */
        .ad-btn {
            line-height: 36px;
            padding: 4px 20px;
            display: inline-block;
            color: #0068FF;
            position: relative;
            cursor: pointer;
            margin-left: 20px;
            background-color: red;
        }

         .ad-btn::after {
            content: '';
            width: 70%;
            position: absolute;
            bottom: 0;
            right: 15%;
            height: 0;
            transition: all 0.5s ease;
            border: 1px solid #0068FF;
            transform: skew(-20deg);
            border-radius: 10px;
        }

        .ad-btn::before {
            content: '';
            width: 0%;
            position: absolute;
            bottom: 0;
            left: 0%;
            height: 0;
            transition: all 0.5s ease;
            border: none;
            transform: skew(-20deg);
            border-radius: 10px;
        }

        .ad-btn:hover::before {
            transition: all 0.5s ease;
            content: '';
            border-top: 1px solid #0068FF;
            border-left: 1px solid #0068FF;
            height: 100%;
            width: 100%;
            left: 0;
            top: 0;
            display: block;
            transform: skew(-20deg);
            border-radius: 10px;
        }

        .ad-btn:hover::after {
            transition: all 0.5s ease;
            content: '';
            border-bottom: 1px solid #0068FF;
            border-right: 1px solid #0068FF;
            border-top: none;
            border-left: none;
            height: 100%;
            width: 100%;
            right: 0;
            bottom: 0;
            display: block;
            transform: skew(-20deg);
            border-radius: 10px;
        }

        /* 特殊形状 */
        .skewed-box {
            position: relative;
            width: 200px;
            height: 100px;
            overflow: hidden;
            margin-top: 20px;
        }

        .skewed-box:before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            z-index: -1;

            background: #3498db;
            transform: skew(-20deg);
        }

        .skewed-box-content {
            color: white;
            padding: 20px;
            position: relative;
            z-index: 1;
        }


        .but {
            float: right;
            width: 22px;
            height: 30px;
            margin: 8px 10px;
            padding: 0 5px;
            display: block;
            background: red;
        }

        .but i {
            width: 100%;
            height: 2px;
            background: yellow;
            display: block;
            margin-top: 15px;
            position: relative;
            border-radius: 10px;
            transition: 0.4s;
            -webkit-transition: 0.4s;
        }

        .but i:before, .but i:after {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            display: block;
            width: 100%;
            height: 2px;
            background: orange;
            border-radius: 10px;
            transition: 0.4s;
            -webkit-transition: 0.4s;
        }

    </style>
</head>

<body>
    <div class="container">
        <div class="loader"></div>
    </div>

    <div class="ad-btn">查看应用场景</div>

    <div class="skewed-box">
        <div class="skewed-box-content">内容</div>
    </div>


    <span class="but" id="but2"><i></i></span>

</body>

</html>