@media (min-width: 320px){
    .head .logo {
        width: 150px;
        margin-top: 10px;
        margin-left: 10px;
    }
    .head ul.menu {
        display: none;
        height: 100%;
    }
    .statistic .vision {
        margin: 0px auto 10px;
    }
    .statistic .title {
        margin: 0px auto 10px;
    }
        .statistic .mission {
        margin: 0px auto 10px;
    }
    .our_specialist .about_text, .about_us .about_text, .we_use .about_text.pull-left {
        margin-left: 5px;
    }
    .about_us .text {
        font-size: 10pt; 
    }
    .our_specialist .text {
        font-size: 13pt;
        padding-top: 0px;
        padding-bottom: 20px;
    }
    .testing .title {   
        letter-spacing: 0px;
    }
    .testimonials .first_bloc {
        width: 100%;
        margin-top: 0px; 
    }
    .testimonials .second_bloc {
        width: 100%;   
    }
    .testing .bg_grey .white_bloc {
        padding-top: 1px;
        padding-bottom: 5px;
    }
    .testimonials .first_bloc .text_1 {
        margin: 30px 0px;
        font-size: 11pt;
    }
    .testimonials .first_bloc .text_2 {
        margin-bottom: 30px;
        font-size: 11pt;
    }
    .testimonials .second_bloc .carousel-inner .item .text {  
        font-size: 11pt;   
        width: 215px;        
    }
    #second-carousel-example-generic .carousel-control .glyphicon-chevron-left { 
        margin-left: -35px;
    }
    #second-carousel-example-generic .carousel-control .glyphicon-chevron-right {   
        margin-right: -35px;
    }
    .we_use .icon{
        width: 30px;
        margin-left: 6px;
    }
    .container-fluid.portfolio .description_portfolio {    
        margin-top: 27%;    
    }
    .container-fluid.portfolio .title_portfolio {
        font-size: 20px;  
    }
    .container-fluid.portfolio .description_portfolio {
        font-size: 10px;
        width: 210px;  
    }
    .container-fluid.portfolio .portfolio_list {
        top: 85px;
        right: 30px;
        width: 120px;
    }
    .contact .first_bloc {
        margin-left: 20px;
    }
}

@media (min-width: 768px){
    .our_specialist .about_text, .about_us .about_text, .we_use .about_text {
        float: right;
        width: 375px;
        padding: 0px 15px;
    }
    .head ul.menu {
        margin-left: -40px;
        display: block;
    }  
    .head ul.menu li a .menu_item {  
        padding: 45px 15px 15px;
    }
    .head .logo {
        margin-left: 20px;
        width: 170px;
        margin-top: 10px;
    }
    #carousel-example-generic .carousel-inner .item .description {
        font-size: 17pt;
        width: 400px;  
        bottom: 90px;  
        left: 155px;        
    }
    #carousel-example-generic .carousel-inner .item .read_more {
        left: 155px;
        bottom: 45px;
    }
    .statistic .vision {
        margin: 0px auto 29px;
    }
    .statistic .title {
        margin: 0px auto 20px;
    }
        .statistic .mission {
        margin: 0px auto 20px;
    }
    .our_specialist .about_text, .about_us .about_text, .we_use .about_text.pull-left {
        margin-left: 10px;
    }
    .about_us .text {
        font-size: 11pt; 
    }
    .our_specialist .text {
        font-size: 13pt;
        padding-top: 49px;
        padding-bottom: 0px;
        padding-left: 15px;
    }
    .testing .bg_grey .text_title { 
        font-size: 23pt;  
    }
    .testimonials .first_bloc .text_1 {
        margin: 40px 0px;
        font-size: 11pt;
    }
    .testimonials .second_bloc .carousel-inner .item .text { 
        font-size: 13pt;  
        width: 265px;
    }
    .testimonials .first_bloc .text_2 {  
        font-size: 11pt;
    }
    .testing .title {   
        letter-spacing: 3px;
    }
    .testimonials .first_bloc {
        width: calc(50% - 15px);
        margin-top: 50px; 
    }
    .testimonials .second_bloc {
        width: calc(50% - 15px);   
    }
    .testing .bg_grey .white_bloc {   
        padding-top: 0px;
        padding-bottom: 0px;
    }
    #second-carousel-example-generic .carousel-control .glyphicon-chevron-left { 
        margin-left: -42px;
    }
    #second-carousel-example-generic .carousel-control .glyphicon-chevron-right {   
        margin-right: -42px;
    }
    .container-fluid.portfolio .description_portfolio {    
        margin-top: 20%;    
    }
    .container-fluid.portfolio .title_portfolio {
        font-size: 50px;  
    }
    .container-fluid.portfolio .description_portfolio {
        font-size: 18px;
        width: 300px;  
    }
    .we_use .icon{
        width: 30px;
        margin-left: 10px;
    }
    .under_footer .icons .fb .sprite_icon {
        background-position: 0px -32px;
    }
    .under_footer .icons .in .sprite_icon {
        background-position: 0px -32px;
    }
    .under_footer .icons .google .sprite_icon {
        background-position: 0px -32px;
    }
    .under_footer .icons .tw .sprite_icon {
        background-position: 0px -32px;
    }
    .container-fluid.portfolio .portfolio_list{  
        top: 140px;
        right: 90px;
        width: 120px;
    } 
    .contact .first_bloc {
        margin-left: 20px;
    }
}
@media (min-width: 992px){
    .head .logo {
        margin-left: 60px;
    }
    #carousel-example-generic .carousel-inner .item .description {
        font-size: 25pt;
        width: 470px;  
        bottom: 190px;  
        left: 270px;        
    }
    #carousel-example-generic .carousel-inner .item .read_more {
        left: 280px;
        bottom: 100px;
    }
    .our_specialist .about_text, .about_us .about_text, .we_use .about_text {
        float: right;
        width: 485px;
        padding: 0px 15px;
        
    }
    .our_specialist .about_text, .about_us .about_text, .we_use .about_text.pull-left {
        margin-left: 50px;
    }
    .our_specialist .text {
        font-size: 16pt;
        padding-top: 90px;
        padding-bottom: 0px;
        padding-left: 20px;
    }
    .testing .bg_grey .text_title { 
        font-size: 25pt;  
    }
    .testimonials .first_bloc .text_1 {
        margin: 50px 0px;
        font-size: 13pt;
    }
    .testimonials .second_bloc .carousel-inner .item .text { 
        font-size: 16pt;  
        width: 325px;
    }
    .testimonials .first_bloc .text_2 {  
        font-size: 13pt;
    }
    .container-fluid.portfolio .description_portfolio {    
        margin-top: 18%;    
    }
    .container-fluid.portfolio .title_portfolio {
        font-size: 56px;  
    }
    .container-fluid.portfolio .description_portfolio {
        font-size: 20px;
        width: 340px;  
    }
    .we_use .icon{
        width: 30px;
        margin-left: 20px;
    }
    .under_footer .icons .fb .sprite_icon {
        background-position: 0px -31px;
    }
    .under_footer .icons .in .sprite_icon {
        background-position: 0px -31px;
    }
    .under_footer .icons .google .sprite_icon {
        background-position: 0px -31px;
    }
    .under_footer .icons .tw .sprite_icon {
        background-position: 0px -31px;
    }
}
@media (min-width: 1200px){
    .head ul.menu li a .menu_item {
        padding: 45px 30px 15px;
    }
    .our_specialist .about_text, .about_us .about_text, .we_use .about_text {
        float: right;
        width: 585px;
        padding: 0px 15px;
    }
    .our_specialist .text {
        font-size: 16pt;
        padding-top: 140px;
        padding-bottom: 0px;
        padding-left: 25px;
    }
    .container-fluid.portfolio .description_portfolio {    
        margin-top: 17%;    
    }
    .we_use .icon{
        width: 30px;
        margin-left: 30px;
    }
}