@media screen and (max-width: 1400px){}

@media screen and (max-width: 1200px) {
    #video{
        display: none;
    }
}

@media screen and (max-width: 960px) {
    .about-bitrix__button{
        margin-top: 6%;
    }

}

@media screen and (max-width: 830px){}

@media screen and (max-width: 670px) {}

@media screen and (max-width: 740px) {}

@media screen and (max-width: 640px) {}

@media screen and (max-width: 570px) {}

@media screen and (max-width: 480px){}

@media screen and (max-width: 376px){}

@media screen and (max-width: 325px) {}