@media(max-width: 1280px){
    .cut-width{
        margin: 0 40px;
        width: calc(100% - 80px);
    }

}

@media(max-width: 1150px){
    .flex_container_buttons_3d_security_designer{
        display: block;
    }
    .flex_container_buttons_3d_security_designer .btn_download_plugin {
        width: 100%;
        margin-right: 0;
    }
    .flex_container_buttons_3d_security_designer .btn_inf_about_plugin {
        width: 100%;
        margin-top: 20px;
        margin-left: 0;
    }
}

@media (max-width: 1024px) {
    .one_item_documentation_switcher_content_part{
        font-size: 12px;
    }
    .cur_documentation_version{
        font-size: 12px;
    }
    .left_curtain_documentation{
        width: 320px;
        height: 100vh;
    }
    .tree_documentation_container_first_level_txt{
        margin-bottom: 0;
        font-size: 14px;
    }
    .tree_documentation_container_second_level_txt{
        margin-left: 0;
        font-size: 14px;
    }
    .tree_documentation_container_first_level_txt.margin{
        margin-left: 24px;
    }
    .tree_documentation_container_second_level_txt.margin{
        margin-left: 24px;
    }
    .left_curtain_documentation{
        position: fixed;
        left: -320px;
        /* opacity: 0; */
        height: 100vh;
        top: 0;
        background: #fff;
        z-index: 10000;
        padding: 0 0 27px 0;
    }
    .documentation_version{
        padding: 0 15px;
        margin-top: 20px;
    }
    .block_overlay{
        top: 0;
    }
    .flex_container_tree_and_content{
        display: block;
    }
    .tree_documentation_container {
         width: unset;
        height: calc(100vh - 172px);
        overflow-y: auto;
        padding: 0 15px;

    }
    .content_part_tree_els{
        width: 100%;
        margin-left: 0;
    }
    .breadcrumbs_documentation_block{
        margin-top: 90px;
        margin-bottom: 2px;
    }
    .container_img_card_contacts{
        height: 250px;
    }
    .cards_contacts_container {
        padding: 80px 0;
        display: flex;
        flex-direction: row;
        flex-wrap: wrap;
    }
    .name_language {
        color: #FFFFFF;
    }
    .img_arrow_language_select{
        filter: brightness(0) saturate(100%) invert(100%) sepia(12%) saturate(0%) hue-rotate(69deg) brightness(103%) contrast(102%);
    }

    .line_go_to_sections{
        width: 100%;
        color: #000000;
        padding-bottom: 15px;
        border-bottom: 1px solid #D1D1D1;
        text-transform: uppercase;
    }
    .line_go_to_sections .orange{
        color: #FB6952;
    }
    .description_txt{
        display: block;
        width: 100%;
        color: #000000;
        margin-bottom: 10px;
    }
    .section_btn{
        height: unset;
    }
    .section_btn.open{
        height: unset;
        bottom: unset;
        position: unset;
        border-radius: 0;
    }
    .section_btn.close{
        height: unset;
        background: #ffffff;
    }
    .container_sections_buttons {
        height: unset;
        background: #10212B;
        position: unset;
        top: 50px;
        z-index: 100;
    }
    .container_sections_buttons.main{
        display: block;
    }
    .container_sections_buttons.not_main{
        display: none;
    }
    .container_sliders{
        display: none;
    }
    .txt_section {
        color: #000000;
    }
    .section_btn.close > .txt_section {
        color: #000000;
        padding: 18px 30px 18px 30px;
        transition: 500ms;
    }
    .section_btn:hover{
        height: unset;
        border-radius: 0;
        bottom: 0;
    }
    .img_go_to_section{
        width: 8px;
        position: relative;
        top: 1.6px;
    }
    .description_sections_buttons{
        display: block;
        padding: 0 30px 20px 30px;
    }
    .cut-width.sections_btns {
        margin: 0;
        width: 100%;
    }
    .section_btn{
        width: 100%;
    }
    .container_content_sections_buttons{
        flex-wrap: wrap;
        height: unset;
    }
    .block_service{
        width: 100%;
    }
    .left_part_service{
        width: 40px;
    }
    .service_img{
        width: 40px;
        height: 40px;
    }
    .descript_process_container{
        width: 180px;
    }
    .form_feedback_container {
        margin: 0 1.5%;
        width: 97%;
        scroll-margin-top: 90px;
    }
    .cut-width.margin_1_{
        margin: 0 1%;
        width: 98%;
    }
    .form_feedback_container{
        padding: 0;
    }
    .plugin_container{
        margin: auto;
        width: 100%;
    }
    .left_part_plugin_container{
        width: calc(60% - 20px);
        margin-right: 20px;
    }
    .container_content_faq{
        margin: 100px 0 0 0;
    }
    .text_header{
        padding-right: 40px;
    }
    .language_select{
        margin-left: 30px;
        margin-right: 30px;
        padding-right: 0;
    }
    .left_part_header{
        width: 235px;
        float: left;
        text-align: -webkit-left;
        display: block;
        position: relative;
        top: 10px;
    }
    .logo_header {
        height: 40px;
    }
    .right_part_header {
        height: 41px;
    }

    .logo_header {
        height: 41px;
    }
    .cut-width.preferens_f_header_1024{
        width: calc(100% - 40px);
        height: 41px;
    }
    .left_part_header{
        width: 205px;
        position: relative;
        top: 0;
    }
    .header{
        height: 40px;
    }
    .right_part_header_mobile{
        /*width: 77%;*/
        display: flex;
        /*-webkit-justify-content: right;*/
        /*justify-content: right;*/
        align-items: center;
        height: 41px;
    }
    .burger_menu_header{
        filter: brightness(0) saturate(100%) invert(8%) sepia(6%) saturate(6783%) hue-rotate(162deg) brightness(94%) contrast(90%);
    }
    .right_part_header{
        display: none;
    }

    .content{
        margin-top: 60px;
    }
    .container_sliders {
        height: calc(100vh - 115px);
        margin-top: unset;
    }
    .info_part_b_projects_slider {
        padding: 0;
        width: calc(100% - 100px);
    }
    .cut-width{
        margin: 0 20px;
        width: calc(100% - 40px);
    }
    .title_page{
        font-size: 36px;
    }
/*    curtain*/
    .curtain_main{
        height: calc(100vh - 20px);
        padding-top: 20px;
        background: #10212B;
        width: 320px;
        position: fixed;
        top: 61px;
        right: 0;
        z-index: 101;
        transition: 200ms;
        display: block;
    }
    .curtain_main.open{
        right: 0;
        transition: 200ms;
    }
    .curtain_main.close{
        right: -320px;
        transition: 200ms;
    }

    .container_first_line_curtain{
        padding-bottom: 20px;
        border-bottom: 1px solid #888;
        width: 100%;
    }
    .block_overlay{
        height: 100vh;
        width: 100vw;
        position: fixed;
        z-index: 101;
    }
    .block_overlay.hide{
        display: none;
    }
    .block_overlay.show{
        display: block;
        background: rgba(16, 33, 43, 0.70);
    }
    .curtain_txt_float{
        float: right;
        text-transform: uppercase;
    }
    .language_select.curtain{
        top: 0;
        margin-left: 10px;
    }
    .description_page{
        font-size: 24px;
    }
    .container_els_curtain{
        padding: 20px 0 5px 0;
    }
    .container_els_curtain.border{
        border-bottom: 1px solid #888;
    }
    .txt_curtain_el{
        display: block;
        color: #ffffff;
        text-transform: uppercase;
        font-size: 16px;
        text-align: right;
        padding-bottom: 15px;
        text-decoration: none;
    }
}

@media (max-width: 850px) {
    .block_service{
        flex-wrap: wrap;
    }
    .service_block_container {
        width: calc(50% - 70px);
    }


}

@media (max-width: 900px){
    .container_content_functional_features_block_items{
        margin-top: -10%;
    }
    .service_block_container{
        width: 44%;
    }
}

@media (max-width: 800px) {
    .content_part_tree_els h1{
        font-size: 36px;
    }
    .name_article_tree{
        font-size: 36px;
    }
    .how_dev_container_widgets {
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
    }
    .mobile_switchers_f_projects{
        display: block;
        margin-top: 10px;
        text-align: -webkit-center;
        width: 100%;
    }
    .left_arrow_f_projects_mobile{
        filter: brightness(0) saturate(100%) invert(27%) sepia(89%) saturate(1195%) hue-rotate(184deg) brightness(87%) contrast(95%);
        width: 15px;
        height: 15px;
    }
    .right_arrow_f_projects_mobile{
        filter: brightness(0) saturate(100%) invert(27%) sepia(89%) saturate(1195%) hue-rotate(184deg) brightness(87%) contrast(95%);
        width: 15px;
        height: 15px;
    }
    .counter_elements_projects_slider{
        position: relative;
        bottom: 2px;
        font-size: 20px;
        color: #0C54A0;
    }
    .label_feedback_form{
        padding-left: 0;
    }
    .input_form_feedback{
        padding-left: 0;
    }
    .container_img_card_contacts{
        height: unset;
    }
    .cards_contacts_container {
        padding: 15px 0;
        display: flex;
        flex-direction: row;
        flex-wrap: wrap;
    }
    .card_contacts {
        width: 100%;
        margin: 2.5% 0;
    }
    .w_one_present{
        padding: 0;
        margin: 20px 0;
    }
    .plugin_container{
        margin: 0 0 1% 0;
    }
    .plugin_description {
        margin-bottom: 10px;
    }
    .right_part_plugin_container{
        display: none;
    }
    .descript_process_container{
        width: 40%;
    }
    .left_part_plugin_container{
        width: 100%;
    }
    .picture_tag_standart{
        display: block;
    }
    .logo_3d_sec_designer_mobile{
        display: block;
    }

    .w_one_present.odd .txt_part_w_one_present{
        margin-left: unset;
        margin-bottom: 20px;
        padding-left: unset;
    }
    .w_one_present.even .txt_part_w_one_present{
        margin-left: unset;
        margin-bottom: 20px;
        padding-left: unset;
    }
    .plugin_description{
        margin-top: 20px;
    }
    .logo_3d_sec_designer_mobile{
        width: 100%;
    }
    .left_part_plugin_container{
        margin-right: 0;
    }
    .img_container_part_w_one_present{
        width: 100%;
    }
    .img_part_w_one_present{
        width: 100%;
        height: 100%;
        object-fit: unset;
        object-position: unset;
        max-height: unset;
    }
    .txt_part_w_one_present{
        width: 100%;
    }
    .container_content_functional_features_block_items{
        flex-wrap: wrap;
    }
    .container_content_features_block_item{
        width: 45%;
    }
    .desctop_additionals_btns .checkbox_container{
        display: none;
    }
    .desctop_additionals_btns .checkbox_container{
        display: none;
    }
    .desctop_additionals_btns .button_form_feedback{
        display: none;
    }
    .label_feedback_form_checkbox{
        width: calc(100% - 24px);
    }
    .mobile_additionals_btns .checkbox_container{
        display: block;
        position: unset;
    }
    .mobile_additionals_btns .checkbox_container{
        display: block;
    }
    .mobile_additionals_btns .button_form_feedback{
        display: block;
        position: unset;
    }
    .mobile_additionals_btns{
        margin-top: 30px;
    }
    .form_feedback_content{
        width: 100%;
    }
    .description_form_feedback{
        width: 100%;
    }
    .container_content_form_feedback{
        flex-direction: column;
    }
    .description_form_feedback_txt{
        margin-bottom: 30px;
    }
    .right_part_proj{
        width: 100%;
        height: unset;
        margin-top: 20px;
        margin-left: 0;
    }
    .left_part_proj{
        width: 100%;
    }
    .img_proj{
        height: unset;
        object-position: unset;
        object-fit: unset;
    }
    .left_part_b_projects_slider{
        display: none;
    }
    .right_part_b_projects_slider{
        display: none;
    }
    .info_part_b_projects_slider{
        width: 100%;
    }
}

@media (max-width: 700px) {

    .flex_container_footer{
        flex-wrap: wrap;
        justify-content: right;
    }
    .service_block_container{
        width: 100%;
        text-align: -webkit-left;
    }
    .left_part_service{
        width: 60px;
    }
    .service_img{
        width: 60px;
        height: 60px;
    }

    .footer_els_container{
        width: 100%;
    }
    /*.right_part_footer{*/
    /*    width: 40%;*/
    /*    text-align: -webkit-left;*/
    /*    float: right;*/
    /*    !*margin-top: 60px;*!*/
    /*}*/
    /*.footer_el{*/
    /*    width: 40%;*/
    /*}*/

}

@media (max-width: 670px) {
    .how_dev_widget_description{
        height: unset;
    }
    .first_line_widget_how_dev{
        height: unset;
    }
    .block_container_how_dev_widget{
        width: 100%;
        justify-content: center;
    }
    .container_content_features_block_item{
        width: 100%;
    }
    .img_item_container_functional_features{
        height: unset;
    }
    .img_item_functional_features{
        object-fit: unset;
        object-position: unset;
        height: unset;
        width: 100%;
    }
    .description_item_features_container{
        text-align: center;
        width: 100%;
    }
}

@media (max-width: 600px) {
    .right_part_footer {
        width: 87%;
        text-align: -webkit-right;
        float: right;
        /* margin-top: 60px; */
    }
    .footer_el {
        width: 40%;
    }
    .footer_el{
        width: 89%;
    }
    .service_block_container {
         margin: unset;
        /* margin-bottom: 70px; */
         padding: unset;
    }
    .options_functional_features{
        height: unset;
    }

    .first_line_block_functional_features{
        flex-direction: column-reverse;
        flex-wrap: wrap;
    }


    .container_txt_first_line_block_functional_features {
        width: 100%;
    }
    .container_image_block_functional_features {
        width: 100%;
    }
    .container_content_features_block_item {
        width: 100%;
    }
    .description_item_features_container{
        width: 100%;
    }

}

@media (max-width: 500px) {
    .service_block_container{
        text-align: -webkit-left;
    }
    .descript_process_container{
        width: 180px;
    }
}

@media (max-width: 380px) {
    .content_part_tree_els h1{
        font-size: 26px;
    }
    .descript_process_container{
        margin-bottom: 15px;
    }
    .breadcrumbs_documentation_block{
        display: none;
    }
    .name_article_tree{
        font-size: 26px;
    }
}