@media( max-width: 1450px ){
 
    .contacts-section-decoration-text{
        margin-left: -640px;
    }

    .services-section-text-decoration{
        font-size: 170px;
        margin-left: -570px;
    }
    .principles-decor-text-1{
        font-size: 165px;
        margin-left: -570px;
    }

    .from-the-founder-section-decoration-text{
        margin-left: -600px;
    }

}

@media (max-width: 1200px){

    html, body{
        font-size: 15px;
    }

    .first-screen-main-title{
        font-size: 3.675rem;
    }

    /* name */
    .first-section-founder-block__name{
        margin-top: -120px;
    }

    /* Title */
    .default-title-of-section{}

        .default-title-of-section h2{
            font-size: 2.45rem;
        }

    /* TABS */
    .services-tabs{}

        /* Nav */
        .services-tabs__nav{}

            .services-tabs__nav li{}

                .services-tabs__nav li.active span:first-child{}
                .services-tabs__nav li.active  i{}

                .services-tabs__nav li span:first-child{
                    font-size: 3.125rem;
                    margin-right: 10px;
                }
                .services-tabs__nav li span:last-child{}

                .services-tabs__nav li i{
                    font-size: 1.025rem;
                }

    /* FORM */
    /* input */
    .default-input, .default-blue-button_form{
        width: 260px;
    }

    /* Single review card */
    .single-review-card{
        height: 420px;
    }

    /* Description */
    .contacts-section .default-title-of-section__description{}
    .default-title-of-section-contacts{}

        .default-title-of-section-contacts__link:nth-child(2){}

        .default-title-of-section-contacts__link{}

            .default-title-of-section-contacts__link span{
                font-size: 20px;
            }

            .default-title-of-section-contacts__link a{
                font-size: 17px;
            }

    /* Single stage of task */
    .single-stage-of-task{}
    .single-stage-of-task:not(:last-child){}
    .single-stage-of-task:not(:last-child)::after{}

        .single-stage-of-task__num{}

        .single-stage-of-task__name{
            display: inline-block;
            vertical-align: middle;
            width: 80%;
        }

            .single-stage-of-task__name span{
                font-size: 22px;
            }

    .default-call-back-form.default-call-back-form_simple .default-input, .default-call-back-form.default-call-back-form_simple .default-blue-button_form{
        width: 290px;
    }

    .logo img{
        max-width: 100%;
    }

    .header .default-blue-button{
        float: right;
        clear: right;
    }

    .header .header-phone{
        float: right;
        clear: right;
        margin-bottom: 10px;
    }
    .header-menu__link a{
        font-size: 0.8rem;
    }

    .contacts-section-decoration-text{
        margin-left: -500px;
    }

    .services-section-text-decoration{
        font-size: 170px;
        margin-left: -480px;
    }
    .principles-decor-text-1{
        font-size: 135px;
        margin-left: -470px;
    }

    .from-the-founder-section-decoration-text{
        margin-left: -480px;
    }

}
@media (max-width: 992px){

    .on-md-none{
        display: none;
    }
    /* FIRST SECTION */
    .first-section{
    }

        .first-section .col-lg-6, .first-section .container, .first-section .row{
        }

        /* Background */
        .first-section__bg{
        }

            .first-section__bg:before{
                display: none;
            }

    .header-menu{
        text-align: right;
    }
    .header-menu__link a{
        font-size: 1.2rem;
    }
    .header .header-phone, .header .default-blue-button{
        display: none;
    }

    .first-section-founder-block__name{
        display: none;
    }
    .first-section-founder-block__man{
        margin-left: -100px;
    }
    .first-screen-main-title{
        padding-right: 60px;
    }
    .advantages-simple-list{
        padding-right: 170px;
    }

    /* Decor */
    .services-section-decoration-img{
        display: none;
    }
    
    .default-title-of-section h2{
        margin-bottom: 20px;
    }

    .default-call-back-form{
        height: auto;
    }

    .default-call-back-form__title{
        font-size: 1.2rem;
    }
    .default-input{
        margin-bottom: 10px;
    }
    .default-input, .default-blue-button_form{
        width: 100%;
        margin-right: 0!important;
    }

    .single-principle__name{
        font-size: 1.4rem;
    }

    .result-section-single-row__what-we-do, .result-section-single-row__result{
        height: auto;
        padding-bottom: 10px;
    }

    /* Conclusion */
    .result-section-concluseion{}

        .result-section-concluseion .icon-exclamation{}

        .result-section-concluseion__name{
            width: 80%;
            line-height: 1.1;
        }

    /* Single review card */
    .single-review-card{
        height: 480px;
    }

        .single-review-card__text p{
            font-size: 1rem;
        }

    .default-call-back-form.default-call-back-form_short{
        height: auto;
    }

    .founder-blockquote{
        padding-top: 0;
    }
    .founder-blockquote__blockquote p{
        font-size: 15px;
        line-height: 1.1;
    }
    .default-call-back-form.default-call-back-form_simple .default-input, .default-call-back-form.default-call-back-form_simple .default-blue-button_form{
        width: 100%;
    }

    .contacts-section-decoration-text{
        position: absolute;
        left: 50%;
        margin-left: -385px;
        top: 1040px;
        font-size: 120px;
    }

    .services-section-text-decoration{
        font-size: 120px;
        font-weight: bold;
        font-style: normal;
        font-stretch: normal;
        line-height: 1;
        letter-spacing: normal;
        text-align: left;
        color: #f2f2f2;
        text-transform: uppercase;
        position: absolute;
        top: 690px;
        left: 50%;
        margin-left: -332px;
    }
    

    .principles-decor-img-1{
        height: 400px;
        width: auto;
        position: absolute;
        left: 50%;
        margin-left: -860px;
        top: 320px;
    }
    .principles-decor-img-2{
        height: 560px;
        width: auto;
        position: absolute;
        right: 50%;
        margin-right: -790px;
        top: 710px;
    }
    .principles-decor-text-1{
        position: absolute;
        font-size: 100px;
        font-weight: bold;
        font-style: normal;
        font-stretch: normal;
        line-height: 0.13;
        letter-spacing: normal;
        text-align: left;
        color: #111111;
        text-transform: uppercase;
        left: 50%;
        margin-left: -400px;
        bottom: 400px;
    }

}

@media (max-width: 768px){

    .header-menu{
        text-align: left;
    }

    .scroll-header, .scroll-header .row{
        height: 65px;
    }
    .scroll-header .header-menu{
        position: absolute;
        top: 0;
        right: 0;
        width: 100%;
    }

    .scroll-header .header-menu .header-menu__link:first-child{
        height: 65px;
        width: 100%;
        text-align: right;
        padding-top: 20px;
        padding-right: 20px;
    }
    .scroll-header .header-menu .header-menu__link:not(:first-child){
        width: 100%;
        background-color: #fff;
        height: 40px;
        float: left;
        margin-top: -4px;
        text-align: right;
        padding-right: 20px;
    }
    .scroll-header .header-menu .header-menu__link:not(:first-child):after{
        width: 40px;
        height: 100%;
        background-color: #fff;
        position: absolute;
        left: -35px;
        top: 0;
        content: '';
        display: block;
    }

    .scroll-header .scroll-header__nav-wrapper{
        position: static;
    }
    .scroll-header__nav-wrapper{}
    .scroll-header__logo-wrapper{
        width: 75%;
        z-index: 5;
    }

    /* Single Pronciple */
    .single-principle{}
    .single-principle:not(:last-child){
        margin-bottom: 50px;
    }
    .single-principle > div:first-child{}

        /* name */
        .single-principle__name{
            width: 110%;
            float: left;
            text-align: left;
            text-align: left;
            margin-right: 0px;
        }

        
        /* num */
        .single-principle__num{}

        /* text */
        .single-principle__text{}

            .single-principle__text p{
                font-size: 1rem;
            }

        /* text */
        .single-principle__img{
            max-width: 100%;
            display: none;
        }

    .single-principle.single-principle_inverse{}
    .single-principle.single-principle_inverse > div:last-child{
        z-index: 3;
    }

        .single-principle.single-principle_inverse .single-principle__name{
            margin-left: 0;
        }

    .result-section-titles-of-columns{
        display: none;
    }
    
    /* Single review card */
    .single-review-card{
        height: 380px;
    }

    .from-the-founder-section-photo{
        margin-top: 30px;
    }
    
    .footer{
        height: auto;
        padding: 15px 0;
    }

    .footer .container .row{
        height: 120px;
        display: block;
        height: auto;
        align-items: center;
    }

    .footer .logo{
        float: none;
        display: inline-block;
    }

    .popup-conf-input{
        width: 100%;
        position: static;
        margin-top: px;
        margin-bottom: 10px;
        margin-top: 3px;
        float: left;
        left: 0;
        bottom: -45px;
        display: flex;
        align-items: center;
    }
    .popup-conf-input span{
        padding-top: 0px;
        font-size: 12px;
    }

}

@media (max-width: 576px) {

    html, body{
        font-size: 10px;
        overflow-x: hidden;
    }

    .first-section{
        height: auto;
    }

    .header{
        text-align: center;
        padding-top: 40px;
    }
    .header .logo{
        float: none;
    }
    .logo img{
        width: 180px;
    } 
    .header-menu{
        text-align: center;
        padding-top: 0!important;
    }
    .first-section-founder-block{
        display: block;
    }
    .first-section__content .col-lg-6:first-child{
        z-index: 3;
    }
    .first-section__content .col-lg-6:last-child{
        z-index: 2;
    }
    .first-section-founder-block__man{
        width: 400px;
        margin-left: -50px;
    }

    .first-section__content{
        padding-top: 180px;
        min-height: auto;
        padding-bottom: 40px;
    }

    .first-screen-main-title{
        padding-right: 0;
        font-size: 2.6rem;
    }

    .advantages-simple-list{
        padding-right: 80px;
        width: 100%;
        margin-bottom: 20px;
    }

    .default-blue-button{
        height: 50px;
        line-height: 50px;
    }

    .services-section{
        padding: 40px 0;
    }

    .services-list__item{
        font-size: 1.35rem;
    }
    
    .default-call-back-form{
        border-width: 10px;
        padding: 15px;
    }
    .default-input, .default-input input{
        height: 50px;
        line-height: 50px;
    }
    .default-input span{
        left: 10px;
        top: 13px;
    }

    .principlaes-section{
        padding: 40px 0;
    }

    .default-title-of-section__description{
        margin-bottom: 30px;
    }

    .single-principle__text{
        margin-top: 20px;
    }
    .single-principle__text p:not(:last-child){
        margin-bottom: 10px;
    }
    .single-principle__num{
        top: 70px;
    }
    .single-principle__name{
        margin-top: 0;
    }

    .result-section{
        padding: 40px 0;
    }

    .result-section-single-row__what-we-do, .result-section-single-row__result{
        font-size: 1.5rem;
        line-height: 1.1;
        padding-top: 34px;
        padding-bottom: 20px;
        padding-left: 20px;
        width: 100%;
    }
    .result-section-single-row__result{
        margin-bottom: 30px;
        /* background-color: #BDDDF9; */
    }
    .result-section-single-row__what-we-do:after{
        z-index: 5;
    }
    .result-section-single-row__what-we-do:before{
        position: absolute;
        left: 20px;
        top: 13px;
       /* font-weight: bold; */
       font-weight: 600;
        content: 'Что мы сделали:';
        font-size: 11px;
    }
    .result-section-single-row__what-we-do:after, .result-section-single-row__result:after{
        border-left: 20px solid transparent;
        border-right: 20px solid transparent;
        border-top: 15px solid #f4f4f4;
        position: absolute;
        display: block;
        content: '';
        left: 50%;
        margin-left: -20px;
        bottom: -49px;
        right: auto;
        top: auto;
    }
    .result-section-single-row__result:before{
        position: absolute;
        left: 20px;
        top: 13px;
        /*font-weight: bold; */
        font-weight: 600;
        content: 'Как это помогло:';
        font-size: 11px;
    }
    .result-section-single-row__result:after{
        border-left: 20px solid transparent;
        border-right: 20px solid transparent;
        border-top: 15px solid #fff;
        top: 0px;
    }
    .result-section-single-row__what-we-do br, .result-section-single-row__result br{
        display: none;
    }

    .reviews-section{
        padding: 40px 0;
    }

    .single-review-card__text p{
        font-size: 1.2rem;
    }
    .default-title-of-section-contacts__link, .default-title-of-section-contacts__link:nth-child(2){
        width: 100%;
    }

    .single-stage-of-task__name{
        width: 70%;
    }

    .single-stage-of-task__name, .single-stage-of-task__num{
        vertical-align: top;
    }

    .contacts-section{
        padding: 40px 0;
    }

    .from-the-founder-section{
        padding: 40px 0;
    }

    .footer-form{
        padding: 40px 0;
    }
    .yadnex-map, .ymaps{
        height: 200px!important;
    }

    .contacts-section-decoration-text{
        position: absolute;
        left: 50%;
        margin-left: -115px;
        top: 1210px;
        font-size: 50px;
        white-space: nowrap;
    }

    .services-section-text-decoration{
        font-size: 120px;
        font-weight: bold;
        font-style: normal;
        font-stretch: normal;
        line-height: 1;
        letter-spacing: normal;
        text-align: left;
        color: #f2f2f2;
        text-transform: uppercase;
        position: absolute;
        top: 690px;
        left: 50%;
        margin-left: -332px;
    }

    .principles-decor-img-1{
        height: 400px;
        width: auto;
        position: absolute;
        left: 50%;
        margin-left: -700px;
        top: 180px;
    }
    .principles-decor-img-2{
        height: 400px;
        width: auto;
        position: absolute;
        right: 50%;
        margin-right: -430px;
        top: 410px;
    }
    .principles-decor-text-1{
        position: absolute;
        font-size: 35px;
        font-weight: bold;
        font-style: normal;
        font-stretch: normal;
        line-height: 0.13;
        letter-spacing: normal;
        text-align: left;
        color: #111111;
        text-transform: uppercase;
        left: 50%;
        margin-left: -100px;
        bottom: 200px;
    }

    .slick-slide{
        width: 100%;
    }

    .default-title-of-section-contacts__socials li{
        margin: 0 7px;
    }

        .default-title-of-section-contacts__socials li a img{
            width: 50px;
        }

    .services-list__item:after{
        top: 7px;
    }

    /* Description */
    .contacts-section .default-title-of-section__description, .default-title-of-section__description{
        font-size: 1.7rem;
        line-height: 1.1;
        padding-top: 0;
        padding-bottom: 0;
    }

    .default-call-back-form__title br{
        display: none;
    }

}