Bootstrap 3 breakpoints and media queries
问题 On the Bootstrap 3 media queries documentation it says: We use the following media queries in our Less files to create the key breakpoints in our grid system. Extra small devices (phones, less than 768px): No media query since this is the default in Bootstrap Small devices (tablets, 768px and up): @media (min-width: @screen-sm-min) { ... } Medium devices (desktops, 992px and up): @media (min-width: @screen-md-min) { ... } Large devices (large desktops, 1200px and up): @media (min-width: