mixin FloatHeaderDescription p&attributes(attributes) These utility classes float an element to the left or right, or disable floating, based on the current viewport size using the a(href='https://developer.mozilla.org/en-US/docs/Web/CSS/float') | CSS code float | property | . code !important | is included to avoid specificity issues. These use the same viewport breakpoints as our grid system. Please be aware float utilities have no effect on flex items. p.mb-0 The classes are named using the format code float-{option} | for code xs | and code float-{breakpoint}-{option} | for code sm | , code md | , code lg, code xl | , and code xxl | . mixin FloatDemo .float-start Float left on all viewport sizes br .float-end Float right on all viewport sizes br .float-none Don't float on all viewport sizes