@media screen and (max-width: 1000px) {
    .header2_container {
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .main_title {
        font-size: 35px;
    }

    .main_course_container,
    .main_title_block,
    .header1_container,
    .header2_container,
    .footer1_container,
    .footer2_container{
        width: 98%;
    }

    .header1_menu_container {
        width: 50%;
    }

    .main_one_course_info {
        width: 100%;
    }

    .price_container_block {
        font-size: 24px;
    }


    .price_container {
        min-width: 160px;
    }
}

@media screen and (max-width: 900px) {
    .course_video_container_iframe {
        height: 500px;
    }
}

@media screen and (max-width: 800px) {
    .main_course_container {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .main_one_course {
        min-width: 370px;
        width: 85%;
    }

    .header1_menu_container {
        width: 50%;
        min-width: 160px;
    }

    .main_title {
        font-size: 30px;
    }

    .header1_logo_container {
        width: 50%;
    }

    .header1_menu {
        justify-content: center;
    }

    .footer1_container {
        flex-direction: column;
    }

    .footer1_pages_container,
    .footer1_logo_container,
    .footer1_contacts_container {
        margin-top: 30px;
    }

    .footer1_logo_container {
        margin-bottom: 40px;
    }

    .unique_case {
        width: 85%;
    }

    .lesson_video_container {
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .lesson_program,
    .video_container {
        width: 100%;
    }

    .main_info_pluses li{
        font-size: 15px;
    }

    .lessons_container {
        width: 98%;
    }

    .login_main {
        width: 98%;
        margin: 50px auto;
    }

    .pay_page_submit_btn {
        min-width: 100px;
    }

    .personal_account_main {
        margin: 100px auto;
    }

    .personal_account_one_course_main {
        margin: 40px auto;
    }

    .personal_account_course_lessons_container,
    .personal_account_course_name_container{
        width: 95%;
    }

    .course_video_container_iframe {
        height: 300px;
    }
}

@media screen and (max-width: 700px) {
    .main_title {
        font-size: 23px;
    }

    .header2_nav_text_container {
        font-size: 30px;
    }

}

@media screen and (max-width: 600px) {
    .main_info_pluses {
        flex-direction: column;
    }

    .main_course_program_inner {
        font-size: 18px ;
    }

    .personal_account_course_name_container h1 {
        font-size: 24px;
    }

    .course_lesson_name_container h1 {
        font-size: 18px;
    }
}

@media screen and (max-width: 500px) {
    .header1_container {
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .header1_logo_container {
        width: 98%;
        align-items: center;
        justify-content: center;
    }

    .header1_menu {
        width: 98%;
        align-items: center;
        justify-content: center;
        margin: 20px 0;
    }

    .header1_logo_text {
        text-align: center;
        font-size: 18px;
    }

    .header1_logo_text_container {
        text-align: center;
    }

    .unique_case_button{
        font-size: 22px;
    }

    .header2_nav_text_container {
        margin: 0;
    }

    .main_title {
        font-size: 18px;
    }

    .more_details_button {
        width: 150px;
    }

    .header2_nav_text_container {
        font-size: 22px;
    }

    .header2_logo_text {
        font-size: 25px;
    }

    .header2_logo_container {
        justify-content: center;
    }

    .unique_case_button {
        margin:0;
    }

    .header1_menu_link_login:after {
        content: '';
    }

    .header1_menu_link_contacts,
    .header1_logo_text {
        display: none;
    }

    .header1_menu_container {
        align-items: center;
        justify-content: center;
        text-align: center;
    }

    .header1_menu{
        margin: 3px 0;
    }

    .header2 {
        margin: 0;
    }

    .header2_nav_text_container,
    .header2_nav_menu{
        text-align: center;
    }


    .header2_nav_text_container span{
        min-width: 100px;
        align-items: center;
    }

    .header1_menu_link_login {
        font-size: 22px;
    }

    .main_course_program,
    .main_container{
        padding-bottom: 30px;
    }

    .lesson_name {
        font-size: 18px;
    }

    .main_course_content,
    .main_course_program_title{
        font-size: 25px;
        margin: 20px 0;
        text-align: center;
    }

    .main_course_program_inner {
        font-size: 15px;
    }

    .lesson_video {
        min-height: 200px;
    }

    .lesson_video_iframe {
        min-height: 200px;
    }

    .one_lesson_dental_img {
        display: none;
    }

    .course_video_container_iframe {
        height: 250px;
    }

}

@media screen and (max-width: 400px) {
    .footer1_container {
        padding: 0;
    }

    .main_container {
        padding-bottom: 30px;
    }

    .main_one_course {
        width: 98%;
        min-width: 180px;
    }

    .main_one_course_info {
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .price_container {
        padding: 2px;
    }

    .more_details_button {
        margin: 2px 0 10px 0;
    }

    .main_course_duration_text {
        font-size: 12px;
    }

    .main_one_course_img {
        border-radius: 10px;
    }

    .header2_nav_text_container {
        font-size: 17px;
    }

    .br {
        display: block;
    }

    .main_title_block {
        padding: 20px 0;
    }

    .unique_case_button {
        font-size: 14px;
        padding: 10px 20px;
    }

    .unique_case {
        width: 99%;
    }

    .header2_logo_container {
        min-width: 180px;
    }

    .personal_account_one_course_link {
        font-size: 17px;
    }

    .personal_account_description_container {
        padding-bottom: 10px;
    }

    .personal_account_course_lesson_link {
        font-size: 14px;
    }
}

@media screen and (max-width: 300px) {

    .personal_account_one_course_link {
        font-size: 12px;
    }

    .personal_account_course_name_container h1 {
        font-size: 15px;
    }

    .personal_account_course_name_container {
        margin-top: 10px;
    }

    .course_video_container_iframe {
        height: 190px;
    }

}