@media screen and (max-width: 767px){ 
    html{ 
        font-size: 14px; 
    }
    .c-site-section{
        padding: 15px 0;
    }
    .c-content:not(.c-content_wide-sidebar){
        flex-direction: column;
    }
    .c-content:not(.c-content_wide-sidebar) .c-content__aside{
        margin-top: 30px;
        padding-top: 30px; 
        border-top: 1px solid #ddd;
    }
    .c-content__aside,
    .c-content__main{
        width: 100%;
    }  
    .c-content_wide-sidebar .c-content__main{
        width: calc(100% - 270px); 
    }
    .c-content_wide-sidebar .c-content__aside{
        width: 250px; 
    }
    .c-site-notification{
        padding: 10px;
    } 
    .c-site-notification__form,
    .c-site-notification__content_centered{
        max-width: 100%; 
    }    
    .c-card_play-button .c-card__image::after{
        width: 50px;
        transform: translate(-50%, -30%);
    }
}
@media screen and (max-width: 570px){ 
    .c-site-footer__bottom{
        flex-direction: column;
    }
    .c-site-footer__links{
        margin-bottom: 15px;
        width: 100%;
    }
    .c-site-header__nav{
        text-align: right;
    }
    

    .c-content_wide-sidebar{
        flex-direction: column;
    }
    .c-content_wide-sidebar .c-content__aside{
        margin-top: 30px;
        padding-top: 30px; 
        border-top: 1px solid #ddd;
    }
    .c-content_wide-sidebar .c-content__aside,
    .c-content_wide-sidebar .c-content__main{
        width: 100%;
    }     
    
    .c-heading_size_0{font-size: 1.7rem;}
    .c-heading_size_1, .c-text h1{font-size: 1.5rem;}
    .c-heading_size_2, .c-text h2{font-size: 1.4rem;}
    .c-heading_size_3, .c-text h3{font-size: 1.3rem;}
    .c-heading_size_4, .c-text h4{font-size: 1.2rem;}
    .c-heading_size_5, .c-text h5{font-size: 1.1rem;}   
} 
@media screen and (max-width: 470px){ 
    .c-site-footer__links a:not(:last-child) {
        margin-right: 10px;
    } 
    .c-site-header__nav a:not(:first-child){
        margin-left: 10px;
    }  
    .c-site-header__nav a{  
        margin-bottom: 5px;
    } 
}