* {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    
    body,
    html {
        margin: 0;
    }
    
    a {
        background: 0 0;
        color: #2190dc;
        text-decoration: none;
        transition: border .2s ease;
    }
    
    .b-container__block {
        max-width: 1140px;
        margin: 0 auto;
    }
    
    .b-footer {
        margin: 0;
        padding: 0;
    }
    
    @media screen and (max-width: 1140px) {
        .b-container__block {
            padding: 0 45px 0 45px;
        }
    }
    
    @media screen and (max-width: 486px) {
        .b-container__block {
            padding: 0 15px 0 15px;
        }
    }
    
    .b-links {
        text-decoration: none;
        color: #272624;
        cursor: pointer;
        width: 100%;
        height: 100%;
        top: 0;
        right: 0;
    }
    
    .b-links:hover {
        text-decoration: none;
        color: unset;
        border-bottom: unset;
    }
    /* // section_check // */
    
    .b-demo__check {
        padding: 100px 0 180px 0;
    }
    
    .b-demo__check_block {
        text-align: center;
        margin: auto;
    }
    
    .b-bage_demo__check {
        margin-top: 80px;
    }
    
    .b-header_demo_check_title {
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: 600;
        font-size: 42px;
        line-height: 58px;
        margin-bottom: 20px;
        padding-top: 60px;
    }
    
    .b-header_demo_check_sub {
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: normal;
        font-size: 18px;
        line-height: 28px;
        color: #272624;
        margin-bottom: 68px;
    }
    
    .b-demo__check_btn {
        padding: 14px 42px;
        text-align: center;
        max-width: 470px;
        border-radius: 8px;
        border: none;
        background-color: #5CB85C;
        color: #FFFFFF;
        font-family: 'Open Sans', sans-serif;
        font-size: 16px;
        line-height: 19px;
    }
    
    .b-demo__check_btn_blue {
        padding: 14px 78px;
        text-align: center;
        max-width: 470px;
        border-radius: 8px;
        border: 2px solid #2190DC;
        color: #2190DC;
        font-family: 'Open Sans', sans-serif;
        font-size: 16px;
        line-height: 19px;
        margin-left: 24px;
    }
    
    .b-demo__check_btn_flex {
        display: flex;
        justify-content: center;
        position: relative;
    }
    
    .b-demo__check_btn:hover {
        border: none;
        background: #52b321;
        color: #FFFFFF;
    }
    
    .b-demo__check_btn_blue:hover {
        border: none;
        border: 2px solid #2190DC;
        background: #2190DC;
        color: #FFFFFF;
    }
    
    @media screen and (max-width: 680px) {
        .b-header_demo_check_title {
            font-size: 38px;
            line-height: 48px;
            margin-bottom: 38px;
        }
    }
    
    @media screen and (max-width: 520px) {
        .b-header_demo_check_title {
            font-size: 24px;
            line-height: 36px;
            margin-bottom: 14px;
        }
        .b-header_demo_check_sub {
            font-size: 16px;
            line-height: 28px;
            margin-bottom: 24px;
            max-width: 100%;
        }
        .b-demo__check_btn_flex {
            display: block;
        }
        .b-demo__check_btn_blue {
            margin-left: 0;
        }
        .b-demo__check_btn_blue_block {
            margin-top: 48px;
        }
        .b-demo__check {
            padding: 20px 0 180px 0;
        }
    }
    /* // section_header // */
    
    .b-bage_demo__BG {
        position: absolute;
        right: 0;
        top: 0;
    }
    
    .b-demo__main_block {
        width: 50%;
        padding-bottom: 28px;
        position: relative;
        margin-right: 75px;
    }
    
    .b-bage_demo__logo {
        margin-bottom: 48px;
    }
    
    .b-header_demo__title {
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: 600;
        font-size: 42px;
        line-height: 58px;
        margin-bottom: 20px;
    }
    
    .b-header_demo__sub {
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: normal;
        font-size: 18px;
        line-height: 28px;
        color: #272624;
        margin-bottom: 32px;
    }
    
    .b-header_demo__list {
        list-style: disc;
        padding-left: 15px;
    }
    
    .b-header_demo__title_small {
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: 600;
        font-size: 24px;
        line-height: 38px;
        color: #272624;
        margin-bottom: 14px;
    }
    
    .b-header_demo__list_txt {
        padding-bottom: 14px;
    }
    
    .b-header_demo__list_txt {
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: normal;
        font-size: 16px;
        line-height: 28px;
        color: #272624;
    }
    
    .b-header_demo__subtitle {
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: normal;
        font-size: 16px;
        line-height: 28px;
        color: #272624;
    }
    
    .b-bage_demo__flex {
        margin-top: 32px;
        display: flex;
        justify-content: start;
        align-items: center;
    }
    
    .b-bage_demo__stars {
        margin-right: 20px;
    }
    
    .b-header_demo__review_flex {
        display: flex;
        justify-content: space-between;
        max-width: 640px;
        margin-top: 48px;
    }
    
    @media screen and (max-width: 1140px) {
        .b-demo__main_block {
            width: 60%;
        }
    }
    
    @media screen and (max-width: 1140px) {
        .b-demo__main_block {
            width: 60%;
        }
    }
    
    @media screen and (max-width: 980px) {
        .b-demo__main_block {
            width: 98%;
        }
        .b-header_demo__sub {
            max-width: 80%;
        }
    }
    
    @media screen and (max-width: 720px) {
        .b-header_demo__review_flex {
            flex-wrap: wrap;
            max-width: 340px;
        }
        .b-bage_demo__block {
            margin-top: 28px;
        }
    }
    
    @media screen and (max-width: 680px) {
        .b-header_demo__title {
            font-size: 38px;
            line-height: 48px;
            margin-bottom: 38px;
        }
    }
    
    @media screen and (max-width: 520px) {
        .b-header_demo__title {
            font-size: 24px;
            line-height: 36px;
            margin-bottom: 14px;
        }
        .b-header_demo__sub {
            font-size: 16px;
            line-height: 28px;
            margin-bottom: 24px;
            max-width: 100%;
        }
        .b-bage_demo__logo {
            margin-bottom: 24px;
        }
        .b-header_demo__subtitle {
            font-size: 14px;
            line-height: 28px;
        }
        .b-header_demo__review_flex {
            margin-top: 38px;
        }
        .b-header_demo__title_small {
            font-weight: 600;
            font-size: 16px;
            line-height: 32px;
        }
        .b-header_demo__list_txt {
            font-size: 14px;
            line-height: 28px;
        }
    }
    /* // section_form // */
    
    .b-demo {
        padding: 80px 0 100px 0;
        background: #F2F7FF;
        box-shadow: rgb(34 36 39/20%) 0 3px 15px 1px;
    }
    
    .b-demo__form_bg {
        background: #FFFFFF;
        border-radius: 15px;
        padding: 60px 58px;
        z-index: 4;
    }
    
    .b-demo__flex {
        display: flex;
        justify-content: space-between;
    }
    /* .b-demo__main_block {
        z-index: 10;
    } */
    
    .b-demo__textarea {
        width: 470px;
        height: 150px;
        border-radius: 8px;
        border: 1px solid #CCCCCC;
        font-size: 16px;
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: normal;
        color: #7A7A7A;
        padding: 12px;
    }
    
    .b-demo__textarea:hover {
        border-color: #2190DC;
    }
    
    .b-demo__textarea:focus {
        border-color: #2190DC;
        outline: none;
    }
    
    .b-demo__select {
        font-size: 15px;
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: normal;
        color: #272624;
        padding: 12px;
        width: 470px;
        height: auto;
        box-sizing: border-box;
        border: 1px solid #C9CCD4;
        border-radius: 8px;
        appearance: none;
        background-image: url("../../../static/images/contact_us/arrow.svg");
        background-repeat: no-repeat, repeat;
        background-position: right 13px top 50%, 0 0;
    }
    
    .b-demo__select:hover {
        border-color: #2190DC;
    }
    
    .b-demo__select:focus {
        border-color: #2190DC;
        outline: none;
    }
    
    .b-demo__form {
        max-width: 50%;
        text-align: left;
    }
    
    .b-demo__main_txt {
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: 600;
        font-size: 28px;
        line-height: 40px;
        color: #000000;
        text-align: center;
    }
    
    .b-demo__form_group {
        margin: 20px 0 20px 0;
    }
    
    .b-demo__btn {
        padding: 17px 0;
        text-align: center;
        width: 470px;
        border-radius: 8px;
        border: none;
        background-color: #2190DC;
        color: #FFFFFF;
        font-family: 'Open Sans', sans-serif;
        font-size: 16px;
        line-height: 19px;
    }
    
    .b-demo__btn:hover {
        border: none;
        background: #328CCA;
        color: #FFFFFF;
    }
    
    .txt {
        max-width: 50%;
    }
    
    .error_validaion_txt {
        color: #F55052;
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: normal;
        font-size: 12px;
        line-height: 14px;
        margin: 6px 0 26px 0;
        display: none;
    }
    
    fieldset {
        border: none;
    }
    
    legend {
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: normal;
        font-size: 16px;
        line-height: 19px;
        margin-bottom: 10px;
    }
    
    .b-demo__form_group_span {
        color: #D93030;
    }
    
    label {
        display: block;
        margin-bottom: 10px;
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: 600;
        font-size: 16px;
        line-height: 28px;
        color: #000000;
    }
    
    label.light {
        font-weight: 300;
        display: inline;
    }
    
    .b-demo__error_validation_txt {
        color: #F55052;
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: normal;
        font-size: 14px;
        line-height: 14px;
        margin: 10px 0 20px 0;
    }
    
    #formDemo input.error_input {
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: normal;
        font-size: 16px;
        background: #FFFFFF;
        border: 1px solid #F55052;
        box-sizing: border-box;
        border-radius: 8px;
        height: auto;
        outline: 0;
        padding: 12px;
        width: 470px;
        color: #7A7A7A;
    }
    
    #formDemo input.correctly_input {
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: normal;
        font-size: 16px;
        background: #FFFFFF;
        border: 1px solid #5CB85C;
        box-sizing: border-box;
        border-radius: 8px;
        height: auto;
        outline: 0;
        padding: 12px;
        width: 470px;
        color: #7A7A7A;
        box-shadow: 0 1px 0 rgba(0, 0, 0, 0.03) inset;
    }
    
    #formDemo input {
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: normal;
        font-size: 16px;
        background: #FFFFFF;
        border: 1px solid #CCCCCC;
        box-sizing: border-box;
        border-radius: 8px;
        height: auto;
        outline: 0;
        padding: 12px;
        width: 470px;
        color: #7A7A7A;
        box-shadow: 0 1px 0 rgba(0, 0, 0, 0.03) inset;
    }
    
    #formDemo input:hover {
        border-color: #2190DC;
    }
    
    #formDemo input:focus {
        border-color: #2190DC;
        outline: none;
    }
    
    @media screen and (max-width: 1130px) {
        #formDemo input.error_input {
            width: 370px;
        }
        #formDemo input.correctly_input {
            width: 370px;
        }
        #formDemo input {
            width: 370px;
        }
        .b-demo__select {
            width: 370px;
        }
        .b-demo__textarea {
            width: 370px;
        }
        .b-demo__btn {
            width: 370px;
        }
    }
    
    @media screen and (max-width: 1024px) {
        .b-demo__flex {
            display: grid;
        }
        .b-demo__form {
            margin: 0 auto;
        }
        .b-demo__main_txt {
            text-align: center;
        }
        .b-contact__sub_txt {
            text-align: center;
        }
        .b-demo__form_bg {
            margin-top: 68px;
        }
        #formDemo input.error_input {
            width: 470px;
        }
        #formDemo input.correctly_input {
            width: 470px;
        }
        #formDemo input {
            width: 470px;
        }
        .b-demo__select {
            width: 470px;
        }
        .b-demo__textarea {
            width: 470px;
        }
        .b-demo__btn {
            width: 470px;
        }
    }
    
    @media screen and (max-width: 800px) {
        form {
            max-width: 90%;
        }
        .b-demo__btn_block {
            padding-right: 20%;
        }
        .b-demo__main_txt {
            max-width: 100%;
        }
        form {
            max-width: 100%;
        }
    }
    
    @media screen and (max-width: 680px) {
        .b-demo__form_bg {
            padding: 60px 28px;
        }
    }
    
    @media screen and (max-width: 640px) {
        .b-contact__sub_txt {
            padding: 24px 0 50px 0;
        }
        #formDemo input {
            width: 420px;
            font-size: 14px;
        }
        #formDemo input.error_input {
            width: 420px;
            font-size: 14px;
        }
        #formDemo input.correctly_input {
            width: 420px;
            font-size: 14px;
        }
        .b-demo__select {
            width: 420px;
            font-size: 14px;
        }
        .b-demo__textarea {
            width: 420px;
            font-size: 14px;
        }
        .b-demo__btn {
            width: 420px;
        }
        .b-demo__form_group {
            margin: 18px 0 20px 0;
        }
        .b-container__block {
            padding: 0 15px 0 15px;
        }
        .b-demo__form_bg {
            padding: 48px 10px;
        }
    }
    
    @media screen and (max-width: 560px) {
        .b-demo__main_txt {
            font-size: 18px;
            line-height: 30px;
        }
        .b-contact__sub_txt {
            font-size: 16px;
            line-height: 24px;
        }
        label {
            font-size: 14px;
        }
    }
    
    @media screen and (max-width: 520px) {
        .b-bage_demo__logo_block {
            max-width: 45%;
        }
        .b-bage_demo__logo {
            width: 80%;
        }
        .b-demo__form_bg {
            margin-top: 32px;
        }
        .b-demo__form_group {
            margin: 14px 0 14px 0;
        }
        .b-demo__main_txt {
            font-size: 20px;
            line-height: 32px;
        }
        .b-contact__sub_txt {
            font-size: 14px;
            line-height: 20px;
        }
        #formDemo input {
            width: 320px;
        }
        #formDemo input.error_input {
            width: 320px;
        }
        #formDemo input.correctly_input {
            width: 320px;
        }
        .b-demo__select {
            width: 320px;
        }
        .b-demo__textarea {
            width: 320px;
        }
        .b-contact__sub_txt {
            padding: 20px 0 40px 0;
            max-width: 90%;
            margin: 0 auto;
        }
        .b-demo__btn {
            width: 320px;
        }
    }
    
    @media screen and (max-width: 420px) {
        .b-demo {
            padding: 48px 0 60px 0;
        }
        form {
            border-radius: 0;
            max-width: 100%;
        }
        .b-demo__btn_block {
            padding-right: 10%;
        }
        .b-demo__main_txt {
            max-width: 70%;
            margin: 0 auto;
        }
        #formDemo input {
            width: 280px;
        }
        #formDemo input.error_input {
            width: 280px;
        }
        #formDemo input.correctly_input {
            width: 280px;
        }
        .b-demo__select {
            width: 280px;
        }
        .b-demo__textarea {
            width: 280px;
        }
        .b-demo__btn {
            width: 280px;
        }
    }
    
    @media screen and (max-width: 320px) {
        .b-demo__main_txt {
            max-width: 86%;
        }
        .b-contact__sub_txt {
            max-width: 100%;
        }
    }
    /* // section_cta // */
    
    .b-cta-contact {
        margin-bottom: 140px;
    }
    
    .b-cta-contact__bg {
        width: 100%;
        height: 240px;
        background: #5270EC;
        border-radius: 16px;
        background-image: url("../../../static/images/contact_us/cta_img_big.svg");
        background-repeat: no-repeat;
    }
    
    .b-cta-contact__txt_block {
        padding: 56px 0 0 94px;
    }
    
    .b-cta-contact__title {
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: 600;
        font-size: 28px;
        line-height: 42px;
        color: #FFFFFF;
        margin-bottom: 48px;
    }
    
    .b-cta-contact__btn {
        padding: 17px 52px;
        text-align: center;
        width: 220px;
        border-radius: 4px;
        border: none;
        background-color: #FFFFFF;
        color: #5270EC;
        font-family: 'Open Sans', sans-serif;
        font-size: 16px;
        line-height: 19px;
    }
    
    .b-cta-contact__btn:hover {
        border: none;
        background: #232AE3;
        color: #FFFFFF;
    }
    
    @media screen and (max-width: 768px) {
        .b-cta-contact__txt_block {
            padding: 56px 0 0 0;
            text-align: center;
        }
        .b-cta-contact__block {
            text-align: center;
        }
    }
    
    @media screen and (max-width: 648px) {
        .b-cta-contact__bg {
            background-image: none;
        }
    }
    
    @media screen and (max-width: 520px) {
        .b-cta-contact__title {
            font-size: 20px;
            margin-bottom: 28px;
        }
        .b-cta-contact__bg {
            height: 180px;
        }
        .b-cta-contact__txt_block {
            padding: 30px 0 0 0;
        }
        .b-cta-contact {
            margin-bottom: 80px;
        }
    }
    /*//////////*/
    
    .b-contact-info {
        background: #EAF1FC;
        border-radius: 15px;
        padding: 90px 50px;
        max-height: 580px;
    }
    
    .b-contact-info__flex {
        display: flex;
        text-align: center;
        align-items: center;
    }
    
    .b-contact-info__title {
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: 600;
        font-size: 20px;
        line-height: 20px;
        text-align: center;
        color: #000000;
        padding-left: 24px;
    }
    
    .b-contact-info__mail {
        padding-top: 28px;
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: 600;
        font-size: 18px;
        line-height: 18px;
        color: #2190DC;
        text-align: center;
        padding-left: 50px;
        padding-bottom: 84px;
    }
    
    .b-contact-info__txt,
    .b-contact-info__txt_2 {
        padding-top: 28px;
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: normal;
        font-size: 18px;
        color: #272624;
        text-align: center;
    }
    
    .b-contact-info__txt_2 {
        padding: 16px 0 84px 0;
    }
    
    @media screen and (max-width: 1024px) {
        .b-contact-info {
            margin-top: 100px;
        }
        .b-contact-info__flex {
            justify-content: center;
        }
        .b-contact-info__mail {
            padding-left: 0;
        }
    }
    
    @media screen and (max-width: 520px) {
        .b-contact-info__title {
            font-size: 16px;
            line-height: 20px;
            padding-left: 18px;
        }
        .b-contact-info__mail {
            font-size: 14px;
            padding-top: 20px;
            padding-bottom: 48px;
        }
        .b-contact-info__txt,
        .b-contact-info__txt_2 {
            font-size: 14px;
            line-height: 18px;
            padding-top: 20px;
        }
        .b-contact-info__txt_2 {
            padding: 16px 0 48px 0;
        }
        hr {
            border-top: 1px solid #2190DC;
            max-width: 130px;
            padding-bottom: 48px;
        }
        .b-contact-info {
            margin-top: 80px;
        }
    }
    /* // section_materials // */
    
    .b-materials {
        margin-bottom: 100px;
    }
    
    .b-materials__flex {
        display: flex;
    }
    
    .b-materials__title {
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: 600;
        font-size: 28px;
        line-height: 32px;
        color: #000000;
        margin-bottom: 54px;
    }
    
    .b-materials__sub_title {
        font-family: 'Open Sans', sans-serif;
        font-style: normal;
        font-weight: normal;
        font-size: 18px;
        line-height: 18px;
        color: #272624;
    }
    
    .b-materials__icon_flex {
        display: flex;
        align-items: center;
        padding-bottom: 40px;
    }
    
    .b-materials__marker {
        background: #FEBD1F;
        border-radius: 50%;
        height: 10px;
        width: 10px;
        margin-right: 20px;
    }
    
    .b-materials__marker_blog {
        background: #F55052;
        border-radius: 50%;
        height: 10px;
        width: 10px;
        margin-right: 20px;
    }
    
    .b-materials_line {
        margin: 0 80px 0 80px;
        border-left: 1px solid #C9CCD4;
        height: 250px;
    }
    
    @media screen and (max-width: 1024px) {
        .b-materials_line {
            margin: 0 40px 0 40px;
        }
    }
    
    @media screen and (max-width: 976px) {
        .b-materials__flex {
            display: block;
        }
        .b-materials_line {
            display: none;
        }
        .b-materials__blog {
            margin-top: 80px;
        }
    }
    
    @media screen and (max-width: 520px) {
        .b-materials__title {
            font-size: 20px;
            line-height: 32px;
            margin-bottom: 24px;
        }
        .b-materials__sub_title {
            font-size: 14px;
            line-height: 18px;
        }
        .b-materials__marker {
            height: 8px;
            width: 8px;
        }
        .b-materials__icon_flex {
            padding-bottom: 20px;
        }
        .b-materials__marker_blog {
            height: 8px;
            width: 8px;
        }
        .b-materials__blog {
            margin-top: 48px;
        }
    }