Can this skill help with responsive design breakpoints?

Yes, it provides full syntax for responsive utility variants like d-md-block or mt-lg-5 to handle layout changes across devices.

Which version of Bootstrap does this skill support?

This skill is specifically optimized for Bootstrap 5.3, including the latest utility API features and color mode updates.

Does it include Flexbox and CSS Grid utilities?

Absolutely. It covers the full range of flexbox alignment (justify-content, align-items) and the newer CSS Grid gap utilities.

Can I use this for positioning and z-index?

Yes, it includes guidance on position-absolute, fixed, and sticky classes, as well as the translate-middle utility for perfect centering.

Bootstrap 5.3 Utilities

Name: Bootstrap 5.3 Utilities
Author: sjnims

bysjnims

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Design Tools

Provides comprehensive expertise in Bootstrap 5.3 utility classes for rapid, responsive frontend styling without custom CSS.

About

This skill empowers Claude to efficiently apply Bootstrap 5.3's extensive utility-first CSS classes, covering everything from spacing and flexbox layout to typography and positioning. It is designed for developers building or maintaining Bootstrap-based projects who need instant access to correct class syntax, responsive variants, and implementation patterns for margins, padding, display properties, and more. By leveraging the Utilities API knowledge, this skill ensures clean, maintainable, and consistent UI development while reducing the need for custom style overrides.

Key Features

Responsive display and flexbox configuration for complex alignments
Precise element positioning and sizing with width, height, and translation classes
1 GitHub stars
Text styling including alignment, weight, transformation, and overflow
Spacing and layout control with margin, padding, and gap utilities
Visual decoration via background colors, borders, shadows, and opacity

Use Cases

Implementing responsive flexbox or grid structures without writing custom media queries
Applying consistent typography and color themes using utility-first classes
Rapidly adjusting component spacing to achieve specific pixel-perfect layouts

About

Key Features

Responsive display and flexbox configuration for complex alignments
Precise element positioning and sizing with width, height, and translation classes
1 GitHub stars
Text styling including alignment, weight, transformation, and overflow
Spacing and layout control with margin, padding, and gap utilities
Visual decoration via background colors, borders, shadows, and opacity

Use Cases

Implementing responsive flexbox or grid structures without writing custom media queries
Applying consistent typography and color themes using utility-first classes
Rapidly adjusting component spacing to achieve specific pixel-perfect layouts