Support CoreUI Development

CoreUI is an MIT-licensed open source project and is completely free to use. However, the amount of effort needed to maintain and develop new features for the project is not sustainable without proper financial backing.

You can support our Open Source software development in the following ways:

  • Buy the CoreUI PRO, and get access to PRO components, and dedicated support.
  • Became a sponsor, and get your logo on BACKERS.md/README.md files or each site of this documentation
  • Give us a star ⭐️ on Github.

Utilities for layout

For faster mobile-friendly and responsive development, CoreUI for Bootstrap includes dozens of utility classes for showing, hiding, aligning, and spacing content.

Changing display

Use our display utilities for responsively toggling common values of the display property. Mix it with our grid system, content, or components to show or hide them across specific viewports.

Flexbox options

CoreUI for Bootstrap is built with flexbox, but not every element’s display has been changed to display: flex as this would add many unnecessary overrides and unexpectedly change key browser behaviors. Most of our components are built with flexbox enabled.

Should you need to add display: flex to an element, do so with .d-flex or one of the responsive variants (e.g., .d-sm-flex). You’ll need this class or display value to allow the use of our extra flexbox utilities for sizing, alignment, spacing, and more.

Margin and padding

Use the margin and padding spacing utilities to control how elements and components are spaced and sized. CoreUI for Bootstrap includes a six-level scale for spacing utilities, based on a 1rem value default $spacer variable. Choose values for all viewports (e.g., .me-3 for margin-right: 1rem in LTR), or pick responsive variants to target specific viewports (e.g., .me-md-3 for margin-right: 1rem —in LTR— starting at the md breakpoint).

Toggle visibility

When toggling display isn’t needed, you can toggle the visibility of an element with our visibility utilities. Invisible elements will still affect the layout of the page, but are visually hidden from visitors.