/* 全局重置 & 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft Yahei", "SimHei", "PingFang SC", sans-serif;
}

body {
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

/* 头部样式 */
.header {
    background-color: #fff;
    padding: 15px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 999;
    max-width: 1248px;
    margin: 0 auto;
    width: 100%;
    padding-left: 2%;
    padding-right: 2%;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo img {
    height: 60px;
}

.logo-text h1 {
    font-size: 20px;
    color: #2c74b3;
    font-weight: 600;
    line-height: 1.2;
}

.logo-text p {
    font-size: 12px;
    color: #666;
    line-height: 1.2;
}

/* 电脑端联系方式（只保留座机，美化样式） */
.header-contact {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 14px;
    color: #333;
}

.header-contact .phone {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 15px;
    background-color: #f0f7ff;
    border-radius: 8px;
    border: 1px solid #e8f4fc;
}

.header-contact .phone i {
    color: #2c74b3;
    font-size: 20px; /* 电话图标放大 */
}

.header-contact .phone-text {
    font-size: 13px;
    color: #666;
    white-space: nowrap;
}

.header-contact .phone-number {
    font-size: 18px; /* 号码放大加粗 */
    font-weight: bold;
    color: #2c74b3;
    letter-spacing: 1px; /* 增加字符间距，更易读 */
}

/* 响应式：手机端隐藏联系方式 */
@media (max-width: 768px) {
    .header-contact {
        display: none;
    }
    .hamburger {
        display: block;
    }
    /* 其他原有响应式样式保持不变 */
}

.hamburger {
    font-size: 24px;
    color: #2c74b3;
    cursor: pointer;
    display: none;
}

/* 导航栏样式（核心优化） */
.nav {
    background-color: #2c74b3;
    width: 100%;
    position: sticky;
    top: 0;
    z-index: 998;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.nav > ul {
    list-style: none;
    display: flex;
    justify-content: center;
    max-width: 1248px;
    margin: 0 auto;
    padding: 0 2%;
    gap: 15px; /* 导航项间距加大 */
}

.nav ul li a {
    display: block;
    padding: 12px 20px; /* 按钮内边距加大，间距更宽 */
    color: #fff;
    font-size: 16px; /* 文字加大2px */
    text-align: center; /* 文字居中 */
    border-radius: 4px;
}

.nav ul li a:hover {
    background-color: #1f5a91;
}

/* 下拉菜单样式 */
.nav .dropdown {
    position: relative;
}

.nav .dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #2c74b3;
    min-width: 200px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    border-radius: 4px;
    margin-top: 2px;
    z-index: 999;
}

.nav .dropdown.open .dropdown-menu {
    display: block;
}

.nav .dropdown-menu li a {
    padding: 12px 20px;
    font-size: 15px;
    text-align: left;
    border-radius: 0;
    border-bottom: 1px solid #3d89c8;
}

.nav .dropdown-menu li:last-child a {
    border-bottom: none;
}

.nav .dropdown-toggle i {
    font-size: 12px;
    margin-left: 8px;
}

/* 顶部banner */
.banner {
    position: relative;
    width: 100%;
    height: 300px;
    overflow: hidden;
}

.banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.banner-text h2 {
    font-size: 36px;
    margin-bottom: 10px;
}

.banner-text p {
    font-size: 18px;
}

/* 证书查询栏 */
.cert-search {
    max-width: 1248px;
    margin: 20px auto;
    display: flex;
    align-items: center;
    background-color: #fff;
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 0 2%;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.search-label {
    background-color: #f36c21;
    color: #fff;
    padding: 12px 20px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px 0 0 8px;
}

.search-input-wrap {
    display: flex;
    align-items: center;
    flex: 1;
    padding: 12px 15px;
    border-right: 1px solid #eee;
}

.search-input-wrap span {
    font-size: 14px;
    color: #333;
    margin-right: 8px;
    white-space: nowrap;
}

.search-input {
    flex: 1;

    border: 1px solid #eee;
    border-radius: 4px;
    outline: none;
    font-size: 14px;
    padding: 8px 10px;
}

.search-input::placeholder {
    color: #999;
}

.search-btn {
    background-color: #2c74b3;
    color: #fff;
    padding: 12px 30px;
    border: none;
    cursor: pointer;
    font-size: 14px;
    border-radius: 0 4px 4px 0;
    margin-right: 1px;
}

.search-btn:hover {
    background-color: #1f5a91;
}

.reset-btn {
    background-color: #666;
    color: #fff;
    padding: 12px 30px;
    border: none;
    cursor: pointer;
    font-size: 14px;
    border-radius: 4px;
}

.reset-btn:hover {
    background-color: #444;
}

/* 主体内容容器 */
.container {
    max-width: 1248px;
    margin: 0 auto 40px;
    padding: 0 2%;
    width: 100%;
}

/* 通用板块样式 */
.content-section {
    background-color: #fff;
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.section-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 25px;
    position: relative;
}

.section-title h3 {
    font-size: 22px;
    color: #2c74b3;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-title h3 i {
    font-size: 20px;
}

.title-line {
    flex: 1;
    height: 2px;
    background-color: #eee;
    margin-left: 15px;
}

.more-news-link {
    font-size: 14px;
    color: #2c74b3;
}

.more-news-link:hover {
    color: #1f5a91;
}

/* 机构简介样式 */
.intro-content {
    display: grid;
    grid-template-columns: 45% 55%;
    gap: 25px;
    align-items: center;
}

.intro-img img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.intro-text p {
    font-size: 15px;
    margin-bottom: 15px;
    color: #555;
    text-align: justify;
}

.more-btn {
    display: inline-block;
    background-color: #2c74b3;
    color: #fff;
    padding: 10px 20px;
    border-radius: 4px;
    font-size: 14px;
    margin-top: 10px;
}

.more-btn:hover {
    background-color: #1f5a91;
}

/* 检测能力卡片样式 */
.ability-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.ability-card {
    border: 1px solid #eee;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.ability-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

.ability-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.ability-card h4 {
    font-size: 18px;
    color: #2c74b3;
    padding: 15px 15px 5px;
    font-weight: 600;
}

.ability-card p {
    font-size: 14px;
    color: #666;
    padding: 0 15px 15px;
    line-height: 1.7;
}

.card-btn {
    display: block;
    background-color: #2c74b3;
    color: #fff;
    text-align: center;
    padding: 10px;
    font-size: 14px;
}

.card-btn:hover {
    background-color: #1f5a91;
}

/* 新闻资讯样式 */
.news-content {
    display: grid;
    grid-template-columns: 65% 35%;
    gap: 25px;
}

.news-big-item {
    display: flex;
    gap: 20px;
}

.news-big-item img {
    width: 50%;
    height: 250px;
    object-fit: cover;
    border-radius: 8px;
}

.news-big-desc h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 10px;
}

.news-date {
    font-size: 12px;
    color: #999;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.news-big-desc p {
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
    line-height: 1.7;
}

.read-more {
    display: inline-block;
    color: #2c74b3;
    font-size: 14px;
}

.read-more:hover {
    color: #1f5a91;
    text-decoration: underline;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.news-small-item {
    display: flex;
    border-bottom: 1px dashed #eee;
    padding-bottom: 15px;
}

.news-small-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.news-small-date {
    font-size: 12px;
    color: #999;
    width: 80px;
    flex-shrink: 0;
}

.news-small-item a {
    font-size: 14px;
    color: #555;
}

.news-small-item a:hover {
    color: #2c74b3;
}

/* 联系方式样式 */
.contact-content {
    display: grid;
    grid-template-columns: 50% 50%;
    gap: 25px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.contact-item i {
    font-size: 24px;
    color: #2c74b3;
    margin-top: 2px;
}

.contact-item h5 {
    font-size: 16px;
    color: #333;
    margin-bottom: 5px;
}

.contact-item p {
    font-size: 14px;
    color: #666;
}

.contact-map img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* 底部样式 */
.footer {
    background-color: #2c74b3;
    color: #fff;
    padding: 40px 0 20px;
}

.footer-top {
    max-width: 1248px;
    margin: 0 auto;
    padding: 0 2%;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
    border-bottom: 1px solid #3d89c8;
    padding-bottom: 30px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.footer-logo img {
    height: 50px;
}

.footer-logo p {
    font-size: 16px;
    font-weight: 600;
}

.footer-links h5, .footer-contact h5 {
    font-size: 16px;
    margin-bottom: 15px;
    position: relative;
    padding-bottom: 8px;
}

.footer-links h5::after, .footer-contact h5::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 2px;
    background-color: #fff;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-links a {
    font-size: 14px;
    color: #e0e0e0;
}

.footer-links a:hover {
    color: #fff;
    padding-left: 5px;
}

.footer-contact p {
    font-size: 14px;
    color: #e0e0e0;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-bottom {
    max-width: 1248px;
    margin: 0 auto;
    padding: 0 2%;
    text-align: center;
    font-size: 12px;
    color: #e0e0e0;
}

/* 响应式适配（手机端） */
@media (max-width: 768px) {
    /* 头部适配 */
    .header-contact {
        display: none;
    }
    .hamburger {
        display: block;
    }
    .logo-text h1 {
        font-size: 16px;
    }
    .logo img {
        height: 45px;
    }

    /* 导航栏适配 */
    .nav {
        display: none;
    }
    .nav.active {
        display: block;
    }
    .nav ul {
        flex-direction: column;
        gap: 0;
        padding: 0;
    }
    .nav ul li a {
        padding: 12px;
        border-bottom: 1px solid #3d89c8;
        border-radius: 0;
    }
    .nav .dropdown-menu {
        position: static;
        min-width: 100%;
        box-shadow: none;
        margin-top: 0;
    }
    .nav .dropdown-menu li a {
        padding-left: 30px;
    }

    /* Banner适配 */
    .banner {
        height: 180px;
    }
    .banner-text h2 {
        font-size: 24px;
    }
    .banner-text p {
        font-size: 14px;
    }

    /* 证书查询栏适配 */
    .cert-search {
        flex-direction: column;
        padding: 0;
    }
    .search-label {
        width: 100%;
        border-radius: 8px 8px 0 0;
        text-align: center;
    }
    .search-input-wrap {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid #eee;
    }
    .search-btn, .reset-btn {
        width: 100%;
        margin-right: 0;
        margin-top: 1px;
        border-radius: 0;
    }
    .reset-btn {
        border-radius: 0 0 8px 8px;
    }

    /* 板块适配 */
    .content-section {
        padding: 20px 15px;
    }
    .section-title h3 {
        font-size: 18px;
    }
    .intro-content, .news-content, .contact-content {
        grid-template-columns: 1fr;
    }
    .news-big-item {
        flex-direction: column;
    }
    .news-big-item img {
        width: 100%;
        height: auto;
    }
    .ability-cards {
        grid-template-columns: 1fr;
    }
    .contact-map img {
        height: 200px;
    }
}

/* 内页面包屑导航 */
.breadcrumb {
    background-color: #f8f9fa;
    padding: 12px 0;
    border-bottom: 1px solid #eee;
}

.breadcrumb-wrap {
    max-width: 1248px;
    margin: 0 auto;
    padding: 0 5%;
    font-size: 14px;
    color: #666;
}

.breadcrumb-wrap a {
    color: #2c74b3;
}

.breadcrumb-wrap a:hover {
    text-decoration: underline;
}

.breadcrumb-wrap span {
    color: #333;
}

/* 内页容器 */
.inner-container {
    max-width: 1248px;
    margin: 0 auto;
    padding: 30px 5% 50px;
    min-height: 600px; /* 保证内页高度 */
}

/* 内页标题 */
.inner-title {
    text-align: center;
    margin-bottom: 40px;
}

.inner-title h2 {
    font-size: 28px;
    color: #2c74b3;
    font-weight: normal;
    margin-bottom: 15px;
}

.title-line {
    width: 80px;
    height: 3px;
    background-color: #2c74b3;
    margin: 0 auto;
}

/* 内页内容布局 */
.inner-content {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 30px;
}

/* 左侧侧边栏 */
.inner-sidebar {
    background-color: #f8f9fa;
    border: 1px solid #eee;
    border-radius: 4px;
}

.sidebar-title {
    background-color: #2c74b3;
    color: #fff;
    padding: 12px 15px;
    font-size: 16px;
    font-weight: bold;
    border-radius: 4px 4px 0 0;
}

.sidebar-menu {
    padding: 10px 0;
}

.sidebar-menu li a {
    display: block;
    padding: 10px 20px;
    font-size: 14px;
    color: #333;
    transition: all 0.3s;
}

.sidebar-menu li a:hover, .sidebar-menu li a.sidebar-active {
    background-color: #e8f4fc;
    color: #2c74b3;
    padding-left: 25px;
}

/* 右侧主内容区 */
.inner-main {
    background-color: #fff;
    padding: 20px 30px;
    border: 1px solid #eee;
    border-radius: 4px;
}

.content-block {
    margin-bottom: 50px;
}

.content-block:last-child {
    margin-bottom: 0;
}

.content-block h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px dashed #eee;
}

.content-text {
    font-size: 15px;
    line-height: 1.8;
    color: #555;
}

.content-text p {
    margin-bottom: 15px;
    text-align: justify;
}

/* 内容图片 */
.content-img {
    text-align: center;
    margin: 20px 0;
}

.content-img img {
    max-width: 100%;
    height: auto;
    border: 1px solid #eee;
    border-radius: 4px;
}

.img-desc {
    font-size: 13px;
    color: #999;
    margin-top: 8px;
    text-align: center !important;
}

/* 内容列表 */
.content-list {
    margin: 15px 0 15px 20px;
}

.content-list li {
    list-style: disc;
    margin-bottom: 8px;
}

/* 荣誉资质列表 */
.honor-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.honor-item {
    text-align: center;
}

.honor-item img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border: 1px solid #eee;
    border-radius: 4px;
    margin-bottom: 8px;
}

.honor-item p {
    font-size: 14px;
    color: #666;
    text-align: center !important;
}

/* 设备列表 */
.equipment-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.equipment-item h4 {
    font-size: 16px;
    color: #2c74b3;
    margin-bottom: 10px;
}

.equipment-item ul {
    margin-left: 20px;
}

.equipment-item li {
    list-style: square;
    margin-bottom: 5px;
    font-size: 14px;
}

/* 导航栏当前激活状态 */
.nav ul li a.active {
    background-color: #1f5a91;
    border-radius: 4px;
}

/* 内页底部 */
.inner-footer {
    background-color: #2c74b3;
    color: #fff;
    text-align: center;
    padding: 20px 0;
    font-size: 12px;
}

/* 内页响应式适配 */
@media (max-width: 768px) {
    /* 面包屑适配 */
    .breadcrumb-wrap {
        padding: 0 3%;
    }

    /* 内页布局改为单列 */
    .inner-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    /* 内页标题适配 */
    .inner-title h2 {
        font-size: 24px;
    }

    /* 右侧内容区适配 */
    .inner-main {
        padding: 15px;
    }

    .content-block h3 {
        font-size: 18px;
    }

    /* 荣誉/设备列表适配 */
    .honor-list, .equipment-list {
        grid-template-columns: 1fr;
    }
}
/* 内页证书查询模块样式 */
.inner-cert-search {
    background-color: #f8f9fa;
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}

.inner-cert-wrap {
    max-width: 1248px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    background-color: #fff;
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 0 2%;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

/* 内页查询模块与主页面样式统一 */
.inner-cert-wrap .search-label {
    background-color: #f36c21;
    color: #fff;
    padding: 12px 20px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px 0 0 8px;
}

.inner-cert-wrap .search-input-wrap {
    display: flex;
    align-items: center;
    flex: 1;
    padding: 12px 15px;
    border-right: 1px solid #eee;
}

.inner-cert-wrap .search-input-wrap span {
    font-size: 14px;
    color: #333;
    margin-right: 8px;
    white-space: nowrap;
}

.inner-cert-wrap .search-input {
    flex: 1;
    border: 1px solid #eee;
    border-radius: 4px;
    outline: none;
    font-size: 14px;
    padding: 8px 10px;
}

.inner-cert-wrap .search-input::placeholder {
    color: #999;
}

.inner-cert-wrap .search-btn {
    background-color: #2c74b3;
    color: #fff;
    padding: 12px 30px;
    border: none;
    cursor: pointer;
    font-size: 14px;
    border-radius: 0 4px 4px 0;
    margin-right: 1px;
}

.inner-cert-wrap .search-btn:hover {
    background-color: #1f5a91;
}

.inner-cert-wrap .reset-btn {
    background-color: #666;
    color: #fff;
    padding: 12px 30px;
    border: none;
    cursor: pointer;
    font-size: 14px;
    border-radius: 4px;
}

.inner-cert-wrap .reset-btn:hover {
    background-color: #444;
}

/* 内页查询模块响应式适配（手机端） */
@media (max-width: 768px) {
    .inner-cert-wrap {
        flex-direction: column;
        padding: 0;
    }
    .inner-cert-wrap .search-label {
        width: 100%;
        border-radius: 8px 8px 0 0;
        text-align: center;
    }
    .inner-cert-wrap .search-input-wrap {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid #eee;
    }
    .inner-cert-wrap .search-btn, .inner-cert-wrap .reset-btn {
        width: 100%;
        margin-right: 0;
        margin-top: 1px;
        border-radius: 0;
    }
    .inner-cert-wrap .reset-btn {
        border-radius: 0 0 8px 8px;
    }
}
        /* 标题 */
        .page-title {
            font-size:24px;
            color:#2c74b3;
            margin-bottom:20px;
            padding-bottom:10px;
            border-bottom:2px solid #eee;
            display:flex;
            align-items:center;
            gap:10px;
        }
        .page-title i {
            font-size:22px;
        }

        /* 新闻列表 */
        .news-list {
            display:flex;
            flex-direction:column;
            gap:20px;
        }
        .news-item {
            display:flex;
            gap:20px;
            padding:20px;
            border:1px solid #eee;
            border-radius:8px;
            transition:0.2s;
        }
        .news-item:hover {
            box-shadow:0 0 10px rgba(0,0,0,0.05);
        }
        .news-img {
            width:200px;
            height:140px;
            object-fit:cover;
            border-radius:6px;
        }
        .news-info {
            flex:1;
        }
        .news-info h3 {
            font-size:18px;
            margin-bottom:8px;
            text-align:left
        }
        .news-info h3 a {
            color:#333;
            text-decoration:none;
        }
        .news-info h3 a:hover {
            color:#2c74b3;
        }
        .news-date {
            font-size:13px;
            color:#999;
            margin-bottom:10px;
        }
        .news-desc {
            font-size:14px;
            color:#666;
            line-height:1.7;
            overflow:hidden;
            display:-webkit-box;
            text-align:left;
            -webkit-line-clamp:2;
            -webkit-box-orient:vertical;
        }

        /* 分页 */
        .page {
            text-align:center;
            margin:40px 0;
        }
        .page a {
            display:inline-block;
            padding:8px 14px;
            margin:0 4px;
            border:1px solid #ddd;
            color:#333;
            text-decoration:none;
            font-size:14px;
        }
        .page a.active {
            background:#2c74b3;
            color:#fff;
            border-color:#2c74b3;
        }

        /* 新闻容器 */
        .newscontainer {
            max-width:900px;
            margin:40px auto;
            padding:0 20px;
        }
/* 新闻标题 */
        .news-title {
            font-size:26px;
            font-weight:bold;
            color:#333;
            text-align:center;
            margin-bottom:15px;
            line-height:1.5;
        }

        /* 新闻信息 */
        .news-info {
            text-align:center;
            color:#999;
            font-size:14px;
            padding-bottom:20px;
            border-bottom:1px solid #eee;
            margin-bottom:30px;
        }
        .news-info span {
            margin:0 10px;
        }

        /* 新闻内容 */
        .news-content {
            font-size:16px;
            line-height:1.9;
            color:#444;
            word-wrap:break-word;
        }
        .news-content p {
            margin-bottom:20px;
        }
        .news-content img {
            max-width:100%;
            height:auto;
            display:block;
            margin:20px auto;
            border-radius:6px;
        }

        /* 返回按钮 */
        .back-box {
            text-align:center;
            margin-top:50px;
        }
        .back-btn {
            display:inline-block;
            padding:10px 25px;
            background:#2c74b3;
            color:#fff;
            text-decoration:none;
            border-radius:4px;
            font-size:15px;
            transition:0.3s;
        }
        .back-btn:hover {
            background:#1f5a91;
        }