Bootstrap 3 - CSS Media Queries and with their LESS equivalents

boostrap-3-media-queries.css

/* Extra small devices (phones, less than 768px) */
/* No media query since this is the default in Bootstrap */

/* Small devices (tablets, 768px and up) */
/* Less: @media (min-width: @screen-sm-min) { ... } */
@media (min-width: 768px) { }

/* Medium devices (desktops, 992px and up) */
/* Less: @media (min-width: @screen-md-min) { ... } */
@media (min-width: 992px) { }

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

/* We occasionally expand on these media queries to include a max-width to limit CSS to a narrower set of devices. */

@media (max-width: 767px) {  } /* Less: @media (max-width: @screen-xs-max) { ... } */
@media (min-width: 768px) and (max-width: 991px) { } /* Less: @media (min-width: @screen-sm-min) and (max-width: @screen-sm-max) { ... } */
@media (min-width: 992px) and (max-width: 1199px) { } /* Less: @media (min-width: @screen-md-min) and (max-width: @screen-md-max) { ... } */
@media (min-width: 1200px) { } /* @media (min-width: @screen-lg-min) { ... } */

/* Here are a few additional media queries found in Bootstrap's code */
@media (max-width: 480px) and (orientation: landscape) { }
@media screen and (max-width: 767px) { }
@media screen and (min-width: 768px) { }
@media print { }