mixin DisplayProperty p Display utility classes that apply to all breakpoints, from code xs | to code xl | , have no breakpoint abbreviation in them. This is because those classes are applied from code min-width: 0; | and up, and thus are not bound by a media query. The remaining breakpoints, however, do include a breakpoint abbreviation. p.mt-3 As such, the classes are named using the format: ul li code .d-{value} | for code xs li code .d-{breakpoint}-{value} | for code sm | , code md | , code lg | , and code xl | , p.mt-3 Where value is one of: ul li code none li code inline li code inline-block li code block li code table li code table-cell li code table-row li code flex li code inline-flex p The display values can be altered by changing the code $displays | variable and recompiling the SCSS. p The media queries effect screen widths with the given breakpoint or larger. For example, code .d-lg-none | sets code display: none; | on both code lg | and code xl | screens. mixin DisplayInHide p For faster mobile-friendly development, use responsive display classes for showing and hiding elements by device. Avoid creating entirely different versions of the same site, instead hide elements responsively for each screen size. p To hide elements simply use the code .d-none | class or one of the code .d-{sm,md,lg,xl}-none | classes for any responsive screen variation. p To show an element only on a given interval of screen sizes you can combine one code .d-*-none class with a code .d-*-* class, for example code .d-none .d-md-block .d-xl-none | will hide the element for all screen sizes except on medium and large devices. table.table.table-bordered thead tr th Screen Size th Class tbody tr td Hidden on all td code .d-none tr td Hidden only on xs td code .d-none .d-sm-block tr td Hidden only on sm td code .d-sm-none .d-md-block tr td Hidden only on md td code .d-md-none .d-lg-block tr td Hidden only on lg td code .d-lg-none .d-xl-block tr td Hidden only on xl td code .d-xl-none tr td Visible on all td code .d-block tr td Visible only on xs td code .d-block .d-sm-none tr td Visible only on sm td code .d-none .d-sm-block .d-md-none tr td Visible only on md td code .d-none .d-md-block .d-lg-none tr td Visible only on lg td code .d-none .d-lg-block .d-xl-none tr td Visible only on xl td code .d-none .d-xl-block mixin DisplayPrintDescription p Change the code display | value of elements when printing with our print display utility classes. Includes support for the same code display | values as our responsive code .d-* utilities. ul li code .d-print-none li code .d-print-inline li code .d-print-inline-block li code .d-print-block li code .d-print-table li code .d-print-table-row li code .d-print-table-cell li code .d-print-flex li code .d-print-inline-flex p.mb-0 The print and display classes can be combined. mixin DisplayBasicExample .d-inline.bg-primary.p-2.text-white d-inline .d-block.bg-primary.p-2.text-white.mt-3 d-block mixin DisplayPrintDemo .d-print-none Screen Only (Hide on print only) .d-none.d-print-block Print Only (Hide on screen only) .d-none.d-lg-block.d-print-block Hide up to large on screen, but always show on print