.type_area {
    width: 1200px;
    margin: 0 auto;
}

main {
    float: none;
    width: auto;
    min-height: calc(100vh - 220px);
}

.error_type_area {
    padding: 40px;
    text-align: center;
}

.error_type_area img {
    height: 300px;
}

.error_type_area .error_message {
    font-size: 26px;
    margin: 20px 0;
}

.error_type_area .error_tips {
    font-size: 18px;
    margin: 20px 0;
}

.error_type_area .btn_group a {
    display: inline-block;
    padding: 10px 20px;
    border: 0;
    color: #fff;
    background-color: #4d51e3;
    margin: 0 20px;
    border-radius: 8px;
}

.introduction_container {
    background-color: #fff;
    padding: 20px 40px;
    min-height: calc(100vh - 333px);
}

.introduction_container p {
    text-indent: 2em;
    font-size: 16px;
    line-height: 35px;
}

.introduction_container h2 {
    font-weight: 500;
    color: #333;
    font-size: 28px;
    text-align: center;
    margin: 20px 0;
}

/* 面包屑导航样式 */
.navigation_conference {
    padding: 15px 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: #666;
}

.navigation_conference .tip_page {
    margin-right: 7px;
    font-size: 14px;
    text-align: center;
    color: #666;
}

.navigation_conference a {
    display: inline-block;
}

.navigation_conference .text {
    padding: 12px 0;
    font-size: 14px;
    color: #4488dd;
}

/* 必填项 */
.required_item_before::before {
    content: '*';
    color: #d40000;
}