@media (max-width: 767px) {
    .chapters_section .tab-btn {
        padding: 10px 30px;
        font-size: 16px;
        font-family: var(--medium-font);
        border-radius: 100px;
        border: 2px solid #fff;
        background: transparent;
        color: #fff;
        font-weight: 500;
        cursor: pointer;
        transition: all 0.3s ease;
        white-space: nowrap;
        margin-bottom: 20px;
    }

    .chapters_section p {
        font-size: 14px;
        line-height: 21px;
        font-weight: 400;
        margin-bottom: 20px;
        font-family: var(--regular-font);
        color: #fff;
    }

    .chapters_section h2 {
        font-size: 34px;
        line-height: 44px;
        font-weight: 300;
        margin-bottom: 20px;
        font-family: var(--light-font);
        color: #fff;
    }

    .key_bottomline {
        border-bottom: 3px solid #FFFFFF;
        width: 10%;
        margin-bottom: 25px;
        margin-top: 10px;
    }

    .chapter_video_section video {
        width: 100%;
        height: 550px;
        object-fit: cover;
        position: absolute;
        top: 0;
        left: 0;
        z-index: 1;
    }

    .chapters_section {
        position: relative;
        width: 100%;
        height: 600px;
        overflow: hidden;
        padding-top: 50px;
    }

    .key-insights {
        background: var(--white-primary);
        padding: 0vw 0vw 0vw 0vw !important;
    }

    .about {
        font-family: var(--medium-font);
        color: var(--red-primary);
        margin: 0;
        font-size: 32px;
        line-height: 42px;
        letter-spacing: -0.02em;
        text-align: center;
        margin-bottom: 15px;
        display: flex;
        justify-content: center;
    }

    .thematic_heading h2 {
        font-size: 32px;
        line-height: 42px;
        font-family: var(--medium-font);
        font-weight: 500;
        color: #C33531;
        text-align: center;
        margin-bottom: 5px;
    }

    .thematic_content h5 {
        font-size: 17px;
        line-height: 27px;
        font-family: var(--bold-font);
        font-weight: 500;
        margin: 0px;
    }

    .thematic_content p {
        font-size: 17px;
        line-height: 23px;
        font-family: var(--regular-font);
        font-weight: 400;
        margin: 0px;
    }

    .engineer-the-future h4 {
        font-family: var(--medium-font);
        color: #ffffff;
        margin: 0;
        font-size: 32px;
        line-height: 42px;
        letter-spacing: -0.02em;
        text-align: center;
        margin-bottom: 40px;
        font-weight: 500;
    }

    .registration_only h4 {
        font-size: 22px;
        line-height: 32px;
        font-family: var(--medium-font);
        color: #000;
        margin-bottom: 0px;
        font-weight: 500;
        margin-top: 0px;
    }

    .registration_only p {
        font-size: 22px;
        line-height: 32px;
        color: #C33531;
        font-family: var(--regular-font);
        text-align: center;
        margin-bottom: 0px;
    }

    .registration_only {
        padding: 30px 0px 30px 0px;
    }

    .contact_us .col-md-3 h2 {
        font-size: 7.5vw;
        line-height: 45.2px;
        font-family: var(--medium-font);
        color: #C33531;
        margin-bottom: 15px;
        font-weight: 500;
        margin-top: 30px;
        text-align: left;
    }

    .contact_us .col-md-9 ul li {
        font-size: 15px;
        line-height: 21px;
        font-family: var(--regular-font);
        color: #000000;
        text-align: left;
        font-weight: 400;
        list-style: none;
        white-space: normal;
    }

    .engineer-the-future .image-box img {
        width: 160px;
        border-radius: 50%;
        object-fit: cover;
        margin-right: 0px;
    }

    .pillars {
        margin: 35px 0px;
    }

    .chapters_section .tabs {
        display: flex;
        overflow-x: auto;
        overflow-y: hidden;
        white-space: nowrap;
        flex-wrap: nowrap;
        width: 100%;
        justify-content: flex-start !important;
    }

    .chapters_section .tabs::-webkit-scrollbar {
        display: none;
    }

    /* chapter-css-add */

    .chapter_banner_colum h1 {
        font-size: 36px;
        line-height: 46px;
        font-family: var(--light-font);
        font-weight: 300;
        color: #fff;
        text-align: center;
        margin-bottom: 50px;
        margin-top: 0px;
    }

    .chapter_banner_colum {
        margin-top: 50% !important;
    }

    .chapter_banner_colum p {
        font-size: 16px;
        line-height: 24px;
        font-family: var(--medium-font);
        font-weight: 500;
        color: #fff;
        text-align: center;
    }

    .chapter_banner_image img {
        height: auto;
        object-fit: cover;
    }

    .chapter_banner_nasscom {
        background-color: #581212;
        height: 470px;
        margin-bottom: 36%;
    }

    .key_focus_areas .vedio_iframe h5 {
        font-size: 16px;
        line-height: 25px;
        font-family: var(--medium-font);
        font-weight: 500;
        color: #000000;
        margin-bottom: 30px;
        text-align: center;
        margin-top: 15px;
    }

    .landingpage .key-insights .title_h4 {
        font-family: var(--bold-font);
        color: var(--red-primary);
        margin: 0;
        font-size: 20px;
        line-height: 30px;
        letter-spacing: -0.02em;
        text-align: center;
        margin-bottom: 10px;
        font-weight: 800;
        margin-top: 50px;
    }

    .nsm_navbar-inner li {
        padding: 3vw 0vw;
        text-align: center;
        list-style: none;
    }

    .logos_section .col-md-12 h4 {
        font-family: var(--bold-font);
        color: var(--red-primary);
        margin: 0;
        font-size: 20px;
        line-height: 30px;
        letter-spacing: -0.02em;
        text-align: center;
        margin-bottom: 28px;
        font-weight: 800;
    }

    .nav_hasdropdown .dropdown-menu {
        display: none;
    }

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

    .dropdown-toggle::after {
        display: none;
    }

    .dropdown-toggle {
        text-decoration: none;
        color: var(--white-primary);
        text-transform: uppercase;
        font-family: var(--regular-font);
        font-size: 6.97vw;
        line-height: 9.97vw;
    }

    .dropdown-menu {
        background-color: transparent;
        border: none;
    }

    .nav_hasdropdown .dropdown-menu {
        display: none;
        position: relative;
        padding-left: 15px;
    }

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

    .hamburger_close_icon {
        position: absolute;
        top: 4.5vw;
        right: 3%;
        display: block;
    }

    .dropdown-menu li a {
        text-decoration: none;
        color: var(--white-primary);
        text-transform: uppercase;
        font-family: var(--regular-font);
        font-size: 5vw;
        line-height: 7vw;
    }
        .engineer-the-future .image-box img {
        width: 110px;
        border-radius: 50%;
        object-fit: cover;
        margin-right: 0px;
    }

}