@media only screen and (min-width:320px) and (max-width:767px) {
    .screen-item.item-active span {
        color: #f9f6f9 !important;
        font-weight: bold;
    }
    section.contact-form {
        margin-top: 40px;
    }
    section.contact-form .offset-1 {
        margin-left: 0px !important;
        padding-bottom: 0px;
    }
    .mb-15 img {
        margin-bottom: 15px !important;
    }
    /* header */
    a.cat-link {
        display: inline-block;
        font-size: 16px;
        padding: 0px;
    }
    a.cat-link img {
        width: auto;
        position: unset;
        margin-top: 0;
        margin-left: 0;
    }
    .hamburger {
        top: -18px;
        left: 8px;
    }
    .page-header-logo img {
        height: auto;
        max-width: 160px;
    }
    .dlr-hero-carousel {
        margin-top: 20px;
    }
    .page-header_2 .page-header-top .text-left span {
        font-size: .66rem;
        text-align: center;
        font-weight: 700;
    }
    .page-header-top .text-right {
        text-align: center !important;
        margin-top: 5px;
    }
    .page-header_2 .page-header-top .text-right img {
        margin-right: 1px;
        width: 18px;
        margin-top: -2px;
    }
    section.adv-links .adv {
        margin-bottom: 25px;
    }
    section.adv-links .adv h4 {
        font-size: 26px;
    }
    .heading-title {
        font-size: 28px;
    }
    div.product-line-box {
        height: auto;
        margin-bottom: 20px;
        text-align: center;
    }
    div.product-line-box div.pl-info h2 {
        font-size: 20px;
    }
    div.product-line-box div.pl-info {
        padding-bottom: 10px;
    }
    section.hist-link {
        padding: 15px 0;
    }
    section.hist-link h1 {
        font-size: 35px;
        line-height: 42px;
    }
    section#home-plx [class|="sectiontitle-element"] h2 {
        line-height: 1.3;
        font-size: 1.7rem;
    }
    section#home-plx {
        background-size: cover;
    }
    .service-details-title {
        font-size: 26px;
        line-height: 1.3;
    }
    main [id*='pwork-'],
    main [id*='ind-'],
    main [id*='dshaft-'] {
        margin-bottom: 60px;
    }
    .page-footer-privacy,
    .page-footer-copyright {
        text-align: center;
    }
    .hero-block .align-container {
        height: auto;
    }
    .menu-dropdown-close {
        position: absolute;
        top: 40px;
        right: 45px;
        color: #fff;
        cursor: pointer;
        border-radius: 50%;
        -webkit-transition: opacity .3s;
        -o-transition: opacity .3s;
        transition: opacity .3s;
        border: 1px solid #f3f6f3;
        padding: 5px 8px 4px 8px;
        line-height: 24px;
    }
    .hero-block .align-container h1 {
        font-size: 35px;
    }
    .page-footer-menu li {
        padding-top: .4rem;
    }
    .page-footer-menu {
        margin-bottom: 20px;
    }
    .page-footer .col-lg-3,
    .page-footer .col-lg-4 {
        margin-bottom: 20px;
    }
    section.contact-form .card-header h3 {
        font-size: 36px;
    }
    section.contact-form .form-start {
        margin-left: 0px;
    }
    .dlr-hero-carousel .slick-active .hero-content {
        padding-left: 15px;
    }
    section.pdt-sec .product-detail h4 {
        font-size: 2.5em;
    }
    .dlr-hero-carousel .hero-subtitle {
        font-size: 14px;
        line-height: 32px;
    }
    .dlr-hero-carousel .slick-slide,
    .dlr-hero-carousel .hero-content {
        padding-top: 25px;
        padding-left: 50px;
        padding-bottom: 25px !important;
        height: auto;
        min-height: auto;
    }
    .dlr-hero-carousel .hero-title {
        font-size: 20px;
        line-height: 25px;
    }
    .offset-4 {
        margin-left: 0px;
    }
    .cd-timeline-img {
        position: absolute;
        top: 13px;
        left: 0;
        width: 20px;
        height: 20px;
    }
    .cd-timeline-content h2 {
        color: #303e49;
        line-height: 1.15;
        font-size: 18px;
        display: block;
        clear: both;
    }
    .cd-timeline-content {
        position: relative;
        margin-left: 0;
        padding: 5px 8px;
        margin-top: 0px;
        float: left;
        left: 10%;
    }
    #cd-timeline::before {
        left: 10px;
    }
    .cd-timeline-content .cd-date {
        font-size: 40px;
        margin-top: 0px;
        margin-bottom: 10px;
        line-height: .8;
    }
    .hero-block .align-container {
        height: auto;
        padding: 30px 0 5px 0;
    }
    .history-tl-container {
        width: 80%;
    }
    .history-tl-container ul.tl li:first-child {
        margin-top: 8em;
    }
    .history-tl-container ul.tl li {
        padding: 0 0 50px 0px;
        position: relative;
        margin: 6em 0 6em 0px;
    }
    ul.tl li .timestamp {
        left: 0%;
        margin-top: -50px;
    }
    ul.tl li .item-title {
        font-size: 18px;
    }
    .history-tl-container ul.tl li::before {
        left: -30px;
        top: -40px;
    }
    .history-tl-container ul::before {
        left: -21px;
        top: 105px;
    }
    .service-details-title::before {
        left: 50px !important;
        width: 150px !important;
        margin-top: 50px !important;
    }
    .service-details-title::after {
        left: 18px !important;
        width: 120px !important;
        margin-top: 45px !important;
    }
}

@media only screen and (min-width:320px) and (max-width:600px) {
    .dlr-hero-carousel .hero-content {
        padding-top: 15px;
        padding-left: 15px;
        padding-bottom: 15px !important;
        height: auto;
        min-height: auto;
    }
    section.home-about {
        padding: 30px 0;
    }
    .page-header_2 .page-header-top .text-left {
        text-align: center !important;
        line-height: 1.1;
    }
    .screen {
        width: 280px;
    }
}

@media only screen and (min-width:320px) and (max-width:480px) {
    a.cat-link {
        display: inline-block;
        font-size: 13px;
        padding: 0px;
    }
    a.cat-link img {
        display: none;
    }
    .page-header-logo img {
        height: auto;
        max-width: 145px;
    }
    section.hist-link .nkn-history {
        padding: 60px 0
    }
    .footer-menu ul {
        padding: 0px;
    }
    .service-details-title {
        font-size: 24px;
    }
}

@media only screen and (min-width:600px) and (max-width: 991px) {
    div.product-line-box div.pl-info h2 {
        position: relative;
        z-index: 99;
        color: #fff;
        font-size: 16px;
    }
    div.product-line-box div.pl-info {
        padding: 10px;
    }
    .dlr-hero-carousel .slick-slide,
    .dlr-hero-carousel .hero-content {
        padding-top: 25px;
        padding-left: 50px;
        padding-bottom: 75px !important;
        height: auto;
        min-height: auto;
    }
    .dlr-hero-carousel .hero-title {
        font-size: 20px;
        line-height: 25px;
    }
}

@media only screen and (min-width:768px) and (max-width:1023px) {
    a.cat-link{
        display: inline-block
    }
    .hamburger {
        top: -15px !important;
    }
    .cd-timeline-content h2 {
        font-size: 20px;
        font-size: 1.25rem;
        margin-bottom: 15px;
        display: block;
        clear: both;
    }
    .cd-timeline-content {
        left: 0;
    }
    .hero-block .align-container {
        height: auto;
        padding: 25px 0;
    }
    .hero-block .align-container h1 {
        font-size: 40px;
    }
    .history-tl-container {
        width: 80%;
    }
    .history-tl-container ul::before {
        left: 70px;
    }
    .history-tl-container ul.tl li::before {
        position: absolute;
        left: -40px;
    }
    ul.tl li .timestamp {
        font-size: 45px;
        left: -48%;
    }
}

@media only screen and (min-width:768px) and (max-width:991px) {
    .sidebar-menu > li > a i {
        float: right;
        font-weight: bold;
        margin-top: 4px;
        margin-right: 0;
    }
}

@media only screen and (min-width:991px) and (max-width: 1199px) {
    .main-menu-item .main-menu-link {
        font-size: 14px;
        font-weight: 500;
        padding: 20px 0 20px 0;
    }
    .main-menu-item-has-child > .main-menu-link > span::after,
    .main-menu-item-has-child > .main-menu-link > span::before {
        top: 10px;
    }
}

@media only screen and (min-width:600px) and (max-width: 1023px) {
    .page-header-logo img {
        max-width: 180px;
    }
    .dlr-hero-carousel .slick-slide,
    .dlr-hero-carousel .hero-content {
        padding-top: 25px;
        padding-left: 50px;
        padding-bottom: 50px !important;
        height: auto;
        min-height: auto;
    }
    .dlr-hero-carousel .hero-title {
        font-size: 36px;
        line-height: 39px;
    }
    section.hist-link {
        padding: 30px 0;
    }
    .offset-4 {
        margin: 0px;
    }
    .page-header_2 .page-header-top .text-left span {
        font-size: .75rem;
    }
}



@media only screen and (min-width:1024px) and (max-width: 1199px) {
    .cd-timeline-content .cd-date {
        float: left;
        padding: 0px 0 8px 25px;
        opacity: 1;
        font-size: 40px;
        margin-right: 100px;
        text-shadow: .5px 0 #000;
        letter-spacing: .5px;
        padding-left: 0;
        color: #00a0e9;
        font-weight: 700;
        margin-top: -7px;
        right: 100%;
        position: absolute;
        top: 0;
    }
    .cd-timeline-img {
        position: absolute;
        top: 13px;
        left: 21%;
        width: 20px;
        height: 20px;
    }
    .cd-timeline-content {
        position: relative;
        margin-left: 60px;
        padding: 12px 8px;
        margin-top: 0px;
        float: left;
        left: 20%;
    }
    .cd-timeline-content h2 {
        color: #303e49;
        line-height: 1.2;
        font-size: 18px;
    }
    .cd-timeline-content {
        width: 80%;
    }
    #cd-timeline::before {
        left: 22.25%;
    }
}

@media only screen and (min-width:1024px) and (max-width: 1599px) {
    .dlr-hero-carousel .slick-slide,
    .dlr-hero-carousel .hero-content {
        padding-top: 50px;
        padding-left: 50px;
        padding-bottom: 75px !important;
        height: auto;
        min-height: auto;
    }
    .dlr-hero-carousel .hero-title {
        font-size: 38px;
        line-height: 52px;
    }
    div.product-line-box div.pl-info {
        padding-left: 15px;
    }
    div.product-line-box div.pl-info h2 {
        font-size: 22px;
    }
    section.hist-link {
        padding: 60px 0;
    }
}

a.cat-link img.catl-btn {
    display: none;
}

@media only screen and (min-width:1200px) {
    a.cat-link img.catl-1200 {
        display: block !important;
    }
}

@media only screen and (min-width:1024px) and (max-width:1199px) {
    a.cat-link img.catl-1024 {
        display: block !important;
    }
}

@media only screen and (min-width:768px) and (max-width:1023px) {
    a.cat-link img.catl-768 {
        display: block !important;
    }
}

@media only screen and (min-width:481px) and (max-width:767px) {
    a.cat-link img.catl-481 {
        display: block !important;
    }
}

a.cat-link .catl-320 {
    display: none;
}

@media only screen and (max-width:480px) {
    a.cat-link .catl-320 {
        display: block !important;
    }
    a.cat-link p {
        margin: 0;
        background: #da1b23;
        padding: 1px 13px 2px 13px;
        border-radius: 7px;
    }
    a.cat-link span {
        display: block;
        line-height: .7;
        margin-top: 6px;
        font-size: 14px;
        font-weight: 600;
        color: #fff;
    }
    a.cat-link i {
        color: #fff;
        font-weight: 600;
        font-size: 10px;
        font-style: normal;
        text-align: center;
    }
}

a.cat-link p {
    margin: 0;
    background: #da1b23;
    padding: 1px 16px 2px 16px;
    border-radius: 7px;
}

a.cat-link span {
    display: block;
    line-height: .8;
    margin-top: 6px;
    font-size: 13px;
    font-weight: 700;
    color: #fff;
}

a.cat-link i {
    color: #fff;
    font-weight: 700;
    font-size: 12px;
    font-style: normal;
    text-align: center;
}

@media only screen and (min-width:1024px) {
    .hamburger {
        display: none !important;
    }
    a.cat-link{
        display: inline-block;
    }
    a.cat-link p {
        margin: 0;
        background: #da1b23;
        padding: 7px 16px 9px 16px;
        border-radius: 7px;
    }
    a.cat-link span {
        display: inline-block;
        line-height: .8;
        margin-top: 6px;
        font-size: 14px;
        font-weight: 700;
        color: #fff;
    }
    a.cat-link i {
        color: #fff;
        font-weight: 700;
        font-size: 14px;
        font-style: normal;
        text-align: center;
    }
}