.our_specialist .about_text, .about_us .about_text, .we_use .about_text.pull-left{
    margin-left: 50px;
}
.head ul.menu li:hover .menu_item {
    background-color: rgb(254, 94, 0);
    color: white;
    -o-transition: all 0.3s;
    -moz-transition: all 0.3s;
    -webkit-transition: all 0.3s;
    transition: all 0.3s;
}



@media (min-width: 320px){
    .about .bg_white{
        margin-top: -1px;
        width: calc(100% + 1px);
    }
    .our_specialist .photo,
    .our_specialist .bg_orange,
    .about .bg_orange{
        width: 100%;
    }   
    .we_use .about_text.pull-left{
        width: 100%;    
    } 
}

@media (min-width: 768px){
    .our_specialist .photo,
    .our_specialist .bg_orange,
    .about .bg_orange,
    .about .bg_white{
        width: 50%;
    }    
}