I struggled for ages to get the right balance between the contrast I loved, but without the shadows getting too deep & this preset gets it right every time. This is my absolute favourite B&W preset & my go to for every B&W edit I do. On hover/focus/active, we bring a particular element to the forefront with a higher z-index value to show their border over the sibling elements.It’s a question I get asked daily & so thought I’d pull together a little blog post to give you a little behind the scenes on my favourite presets to use. To handle overlapping borders within components (e.g., buttons and inputs in input groups), we use low single digit z-index values of 1, 2, and 3 for default, hover, and active states. $zindex-dropdown : 1000 ! default $zindex-sticky : 1020 ! default $zindex-fixed : 1030 ! default $zindex-modal-backdrop : 1040 ! default $zindex-modal : 1050 ! default $zindex-popover : 1060 ! default $zindex-tooltip : 1070 ! default We don’t encourage customization of these individual values should you change one, you likely need to change them all. There’s no reason we couldn’t have used 100+ or 500+. We need a standard set of these across our layered components-tooltips, popovers, navbars, dropdowns, modals-so we can be reasonably consistent in the behaviors. These higher values start at an arbitrary number, high and specific enough to ideally avoid conflicts. We utilize a default z-index scale in Bootstrap that’s been designed to properly layer navigation, tooltips and popovers, modals, and more. Several Bootstrap components utilize z-index, the CSS property that helps control layout by providing a third axis to arrange content. Extra small devices (portrait phones, less than 576px) // No media query since this is the default in Bootstrap // Small devices (landscape phones, 576px and up) ( min-width : 576px ) Z-index These breakpoints are mostly based on minimum viewport widths and allow us to scale up elements as the viewport changes.īootstrap primarily uses the following media query ranges-or breakpoints-in our source Sass files for our layout, grid system, and components. Since Bootstrap is developed to be mobile first, we use a handful of media queries to create sensible breakpoints for our layouts and interfaces.

Smal presets