/*// Small devices (landscape phones, 576px and up)*/
@media (min-width: 576px) { ... }

/*// Medium devices (tablets, 768px and up)*/
@media (min-width: 768px) {

@media  (min-width: 992px) { ... }

/*// Extra large devices (large desktops, 1200px and up)*/
@media (min-width: 1200px) { ... }