@media (min-width: 1750px) {
    .container {
        max-width: 1744px;
    }
}

@media (min-width: 1200px) {
    .container {
        max-width: 1280px;
    }
}

@media (max-width: 1700px) {
    header .navbar-nav .nav-item .nav-link {
        font-size: 23px;
        padding: 0px 20px;
    }
    header .navbar-nav .nav-item .nav-link.btn-sie {
        width: 180px;
        height: 54px;
        margin-left: 20px;
    }
    .hero-sec .text-box {
        max-width: 625px;
    }
    .hero-sec {
        padding: 195px 0px;
    }
    .text-box p {
        font-size: 14px;
        line-height: 29px;
    }
    .box img {
        width: 95px;
        height: 95px;
    }
    .msg-sec .box h6 {
        font-size: 14px;
        margin-top: 24px;
    }
    .section-4 .text-box {
        max-width: 600px;
    }
    .content-box h6 {
        font-size: 14px;
    }
    .timeline-article .meta-date {
        left: 90px;
    }
    .contact-sec .top-sec ul li a span {
        margin-left: 28px;
    }
    .contact-sec .top-sec ul li a {
        font-size: 14px;
    }
    .btn-contact {
        width: 80%;
        font-size: 14px;
        margin-left: auto;
    }
    .bottom-sec [class*="col-"] {
        padding: 0 25px;
    }
    .bottom-sec .row {
        margin: 0 -25px;
    }
    footer .text-box h5 {
        font-size: 14px;
        line-height: 28px;
    }
    footer .text-box ul li a {
        font-size: 14px;
        line-height: 36px;
    }
    .copy-right p {
        font-size: 14px;
        padding: 26px 0px 25px;
    }
    .btn-default {
        margin-top: 48px;
    }
    .contact-sec {
        margin: 150px 0px 0px;
    }
    .contact-sec iframe {
        height: 600px;
    }
}

@media (max-width: 1366px) {
    .hero-sec .text-box p {
        font-size: 14px;
        line-height: 37px;
    }
    .hero-sec .text-box h1 {
        font-size: 32px;
    }
    .hero-sec .text-box {
        max-width: 900px;
    }
    .hero-sec {
        padding: 148px 0px;
    }
    .text-box h2 {
        font-size: 28px;
        line-height: 63px;
    }
    .checking-sec .text-box h2 {
        margin-bottom: 26px;
    }
    .checking-sec .text-box h2::after {
        left: -29px;
        top: -18px;
        width: 121px;
    }
    .section-4 {
        padding: 99px 0px 120px;
    }
    .content-box h6 {
        font-size: 16px;
    }
    .timeline-article .meta-date {
        font-size: 35px;
    }
    .contact-sec {
        margin: 125px 0px 0px;
    }
    .contact-sec .top-sec ul {
        margin-top: 45px;
    }
    .contact-sec .top-sec {
        padding: 90px 0px 85px;
    }
    .bottom-sec {
        padding: 100px 0px 120px;
    }
    .bottom-sec [class*="col-"] {
        padding: 0 22px;
    }
    .bottom-sec .row {
        margin: 0 -22px;
    }
    .btn-contact {
        font-size: 14px;
    }
    footer .top-footer {
        padding: 65px 0px 41px;
    }
    footer .text-box h5 {
        font-size: 20px;
        line-height: 31px;
    }
}

@media (max-width: 1199px) {
    header .navbar-nav .nav-item .nav-link {
        font-size: 20px;
        padding: 0px 14px;
    }
    header .navbar-nav .nav-item .nav-link.btn-sie {
        width: 160px;
        height: 50px;
        margin-left: 14px;
    }
    .hero-sec .text-box h1 {
        font-size: 28px;
    }
    .hero-sec .text-box p {
        font-size: 16px;
        line-height: 29px;
    }
    .hero-sec .text-box {
        max-width: 690px;
    }
    .text-box h2 {
        font-size: 28px;
        line-height: 50px;
    }
    .text-box p {
        font-size: 14px;
        line-height: 25px;
    }
    .checking-sec .text-box h2::after {
        left: -12px;
        top: -27px;
        width: 102px;
    }
    .box img {
        width: 90px;
        height: 90px;
    }
    .msg-sec .box h6 {
        font-size: 14px;
        margin-top: 20px;
    }
    .btn-default {
        font-size: 14px;
        width: 220px;
        height: 48px;
        margin-top: 40px;
    }
    .section-4 {
        padding: 90px 0px 95px;
    }
    .timeline-article .meta-date {
        font-size: 30px;
        width: 60px;
        height: 60px;
        left: 60px;
    }
    .main-timeline-section .conference-center-line {
        top: 76%;
    }
    .content-box h6 {
        font-size: 15px;
        margin-top: 27px;
    }
    .timeline-article .meta-date {
        top: 54%;
    }
    .timeline-article-top .content-box {
        top: 54%;
    }
    .contact-sec {
        margin: 95px 0px 0px;
    }
    .contact-sec .top-sec {
        padding: 62px 0px 70px;
    }
    .contact-sec .top-sec ul li a span {
        margin-left: 16px;
    }
    .contact-sec .top-sec ul li a img {
        width: 25px;
    }
    .contact-sec .top-sec ul li a {
        font-size: 19px;
    }
    .contact-sec .top-sec ul {
        margin-top: 33px;
    }
    .bottom-sec {
        padding: 65px 0px 90px;
    }
    .bottom-sec form .form-control {
        font-size: 20px;
        line-height: 49px;
    }
    .row-space {
        margin-bottom: 20px !important;
    }
    .contact-sec iframe {
        height: 450px;
    }
    footer .text-box ul li a {
        font-size: 14px;
        line-height: 33px;
    }
    footer .text-box h5 {
        margin-bottom: 23px;
    }
    .copy-right p {
        font-size: 19px;
        padding: 22px 0px 21px;
    }
    footer .top-footer {
        padding: 55px 0px 38px;
    }
}

@media (max-width: 991px) {
    header .navbar-nav .nav-item .nav-link {
        padding: 14px;
    }
    header .navbar-collapse {
        position: absolute;
        left: 0;
        right: 0;
        top: 100px;
        background: #fff;
        z-index: 1;
        padding-bottom: 40px;
    }
    .hero-sec .text-box h1 {
        font-size: 24px;
    }
    .hero-sec .text-box p {
        font-size: 15px;
        line-height: 22px;
    }
    .hero-sec .text-box {
        max-width: 565px;
    }
    .hero-sec {
        padding: 94px 0px;
    }
    .text-box h2 {
        font-size: 24px;
        line-height: 45px;
    }
    .checking-sec .text-box h2::after {
        left: -20px;
        top: -41px;
    }
    .box img {
        width: 70px;
        height: 70px;
    }
    .msg-sec .box h6 {
        font-size: 19px;
        margin-top: 12px;
    }
    .section-4 .text-box p {
        font-size: 17px;
        line-height: 21px;
    }
    .btn-default {
        font-size: 16px;
        width: 200px;
        height: 44px;
        margin-top: 28px;
    }
    .timeline-article .meta-date {
        font-size: 26px;
        width: 50px;
        height: 50px;
        left: 39px;
    }
    .main-timeline-section .conference-center-line {
        height: 8px;
        top: 66%;
    }
    .content-box img {
        width: 50px;
        height: 50px;
    }
    .timeline-article .meta-date {
        top: 47%;
    }
    .timeline-article-top .content-box {
        top: 43%;
    }
    .contact-sec {
        margin: 0;
    }
    .contact-sec .top-sec ul li a img {
        width: 20px;
    }
    .contact-sec .top-sec ul li a {
        font-size: 15px;
    }
    .contact-sec .top-sec ul {
        margin-top: 18px;
    }
    .contact-sec .top-sec {
        padding: 45px 0px 55px;
    }
    .bottom-sec form .form-control {
        font-size: 14px;
        line-height: 45px;
    }
    .bottom-sec [class*="col-"] {
        padding: 0 12px;
    }
    .bottom-sec .row {
        margin: 0 -12px;
    }
    .btn-contact {
        font-size: 14px;
        height: 48px;
        width: 100%;
        border: 2px solid #fff;
        margin: 0;
    }
    .bottom-sec {
        padding: 55px 0px 60px;
    }
    .contact-sec iframe {
        height: 335px;
    }
    footer .text-box ul li a {
        font-size: 16px;
        line-height: 30px;
    }
    footer .text-box h5 {
        font-size: 17px;
        line-height: 26px;
    }
    footer .top-footer {
        padding: 42px 0px 35px;
    }
}

@media (max-width: 767px) {
    .hero-sec {
        background-image: url(../images/mobile-hero.png);
        padding: 115px 0px 160px;
    }
    .hero-sec .text-box h1 {
        font-size: 24px;
    }
    .hero-sec .text-box p {
        font-size: 14px;
        line-height: 20px;
    }
    .checking-sec .text-box h2::after {
        left: -14px;
        top: -59px;
        width: 54px;
    }
    .text-box h2 {
        font-size: 20px;
        line-height: 26px;
    }
    .text-box p {
        font-size: 14px;
        line-height: 23px;
    }
    .checking-sec .text-box h2 {
        margin-bottom: 20px;
    }
    .box img {
        width: auto;
        height: auto;
    }
    .msg-sec .box h6 {
        font-size: 16px;
        margin-top: 30px;
    }
    .device-space {
        margin-top: 90px;
    }
    .msg-sec .box {
        max-width: 100%;
    }
    .msg-sec {
        padding: 80px 0px 85px;
    }
    .section-4 {
        padding: 60px 0px;
    }
    .section-4 .text-box h2 {
        text-align: center;
    }
    .section-4 .text-box p {
        font-size: 14px;
        line-height: 23px;
    }
    .device-space2 {
        margin-top: 54px;
    }
    .btn-default {
        font-size: 16px;
        width: 220px;
        height: 48px;
        margin: 28px auto 0;
    }
    .content-box h6 {
        max-width: 185px;
        margin: 0 auto 28px;
    }
    .contact-sec .top-sec ul {
        display: block;
        text-align: start;
    }
    .contact-sec .top-sec ul li {
        margin-top: 23px;
    }
    .contact-sec .top-sec ul li a {
        font-size: 14px;
    }
    .main-timeline-section {
        display: none;
    }
    .row-space {
        margin-bottom: 0px !important;
    }
    .contact-sec form .form-group {
        margin-bottom: 56px;
    }
    .timeline {
        display: block;
    }
    .rich-text {
        display: block;
    }
    textarea.form-control {
        min-height: 152px;
    }
    .bottom-sec {
        padding: 68px 0px 80px;
    }
    iframe {
        display: none;
    }
    footer .text-box h5 {
        font-size: 14px;
        line-height: 35px;
    }
    footer .text-box ul li a {
        font-size: 14px;
        line-height: 35px;
    }
    .footer-space {
        margin-bottom: 55px;
    }
    .copy-right {
        display: none;
    }
    .location-text {
        font-size: 18px !important;
        margin-bottom: 0px !important;
    }
    footer .top-footer {
        padding: 57px 0px 27px;
        border-bottom: 0px;
    }
    .checking-sec .text-box h2 br {
        display: none;
    }
    .timeline .text-box {
        padding: 0px 30px;
    }
    .btn-contact {
        margin: 30px 0 0 0;
    }
}

@media (max-width: 575px) {
    .row>* {
        padding-right: 28px !important;
        padding-left: 28px !important;
    }
    .hide-text {
        display: none;
    }
    .timeline .text-box {
        padding: 0px 0px;
    }
    .contact-sec form .form-group {
        margin-bottom: 45px;
    }
    .location-box {
        padding: 0px 20px;
    }
    .location-text br {
        display: block;
    }
    .contact-sec .top-sec ul li a {
        display: flex;
        align-items: start;
    }
}

@media (max-width: 375px) {
    .row>* {
        padding-right: 12px !important;
        padding-left: 12px !important;
    }
    .navbar-brand img {
        width: 152px;
    }
    .hero-sec .text-box h1 {
        font-size: 22px;
        line-height: 30px;
    }
    .hero-sec .text-box p {
        font-size: 14px;
        line-height: 24px;
    }
    header .navbar-collapse {
        top: 95px;
    }
    header .fixed-top .navbar-collapse {
        top: 88px;
    }
    .hero-sec {
        padding: 100px 0px 127px;
    }
    .text-box h2 {
        font-size: 18px;
        line-height: 24px;
    }
    .checking-sec .text-box h2::after {
        left: -5px;
        top: -69px;
    }
    .text-box p {
        font-size: 16px;
        line-height: 20px;
    }
    .box img {
        width: 104px;
        height: 104px;
    }
    .btn-default {
        font-size: 16px;
        width: 200px;
        height: 44px;
    }
    .contact-sec .top-sec ul li a {
        font-size: 14px;
    }
    .location-box {
        padding: 0px;
    }
}