Все стили прописываю под media screen and (max-width:1200px){
@media only screen and (min-width: 320px) and (max-width: 479px) {....}
@media only screen and (min-width: 480px) and (max-width: 767px) {....}
@media only screen and (min-width: 768px) and (max-width: 991px) {....}
@media only screen and (min-width: 992px) and (max-width: 1199px) {....}
@media only screen and (min-width: 1200px) and (max-width: 1920px) {....}