A CSS skeleton extracted from bootstrap.css to define responsive classes.

bslikeresponsive.css

/*
A CSS skeleton extracted from bootstrap.css to define responsive classes.
Make sure you define classes for each screen size and you should have a responsive design :-)
*/

/* print */
@media print {
}

/* universal */
@media all{
}

/* xs or sm- */
@media (max-width: 767px) {
}

/* sm+ */
@media (min-width: 768px) {
}

/* md+ */
@media (min-width: 992px) {
}

/* lg */
@media (min-width: 1200px) {
}

/* sm - md */
@media (min-width: 768px) and (max-width: 991px) {
}

/* md - lg */
@media (min-width: 992px) and (max-width: 1199px) {
}

/* some deprecated IE stuff - don't worry about it! */
@-ms-viewport {
}