.outer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            max-width: 1800px;
            margin: 20px auto;
            padding: 20px;
            border-radius: 20px;
            background-image: linear-gradient(0deg, #fbfbfb, #ffffff);
        border: 2px solid #ffffff;
        box-shadow: 0 0px 8px rgb(0 0 0 / 10%);
        }

        .form-container,
        .image-container {
            flex: 1;
            min-width: 300px;
            margin: 20px;
        }

        .form-container {
            padding: 20px;
        }

        .image-container img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
        }

        .link-title {
            text-align: center;
            color: #272727;
            margin-bottom: 20px;
        }

        .link-title h1 {
            font-size: 26px;
            font-family: "微软雅黑";
        }

        .link-title p {
            font-size: 16px;
            color: #999;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-size: 16px;
            color: #666;
        }

        .form-group input {
            width: 100%;
            padding: 10px;
            font-size: 16px;
            border: 1px solid #eee;
            border-radius: 5px;
        }

        .btn-container {
            text-align: center;
            margin-top: 20px;
        }

        .btn {
            padding: 10px 20px;
            font-size: 16px;
            color: #fff;
            background-color: #0000ff;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            margin: 0 10px;
        }
    .bt:hover{
        background-color: #0000ff;
    }
        .btn-default {
            background-color: #666;
        }

        @media screen and (max-width: 768px) {
            .outer-container {
                flex-direction: column;
                padding: 10px;
            }

            .form-container,
            .image-container {
                margin: 10px 0;
            }
        }