This cheat sheet provides a comprehensive overview of the Bootstrap v5 CSS framework, including its layout system, typography, colors, components, utilities, JavaScript plugins, customization options, accessibility considerations, responsive utilities, and RTL support.

It also demonstrates with some code usage examples how to use various features in your HTML and CSS code.

• Container: .container, .container-fluid, .container-{breakpoint}
• Grid system: .row, .col, .col-{breakpoint}-{size}
• Responsive breakpoints: sm, md, lg, xl, xxl

Demo:

<div class="container">
  <div class="row">
    <div class="col-md-6">Column 1</div>
    <div class="col-md-6">Column 2</div>
  </div>
</div>

• Headings: 
   to 
  , .h1 to .h6
• Display headings: .display-1 to .display-6
• Lead paragraph: .lead
• Inline text elements: .mark, .small, .text-muted, .text-decoration-none
• Text alignment: .text-start, .text-center, .text-end
• Text wrapping: .text-wrap, .text-nowrap
• Text transform: .text-lowercase, .text-uppercase, .text-capitalize
• Font weight and italics: .fw-bold, .fw-normal, .fst-italic, .fst-normal

Demo:

<h1>Heading 1</h1>
<h1 class="display-1">Display Heading</h1>
<p class="lead">Lead paragraph</p>
<p class="text-muted">Muted text</p>

• Text colors: .text-primary, .text-secondary, .text-success, .text-danger, .text-warning, .text-info, .text-light, .text-dark, .text-body, .text-muted, .text-white, .text-black-50, .text-white-50
• Background colors: .bg-primary, .bg-secondary, .bg-success, .bg-danger, .bg-warning, .bg-info, .bg-light, .bg-dark, .bg-body, .bg-white, .bg-transparent

Demo:

<p class="text-primary">Primary text</p>
<div class="bg-success text-white">Success background</div>

• Responsive images: .img-fluid
• Image thumbnails: .img-thumbnail
• Aligning images: .float-start, .float-end, .mx-auto, .d-block

Demo:

<img src="example.jpg" class="img-fluid" alt="Responsive image">
<img src="thumbnail.jpg" class="img-thumbnail" alt="Thumbnail">

• Basic table: .table
• Table variants: .table-{variant} (e.g., .table-striped, .table-bordered, .table-hover, .table-sm)
• Responsive tables: .table-responsive, .table-responsive-{breakpoint}

Demo:

<table class="table table-striped">
  <thead>
    <tr>
      <th scope="col">#</th>
      <th scope="col">First</th>
      <th scope="col">Last</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <th scope="row">1</th>
      <td>Mark</td>
      <td>Otto</td>
    </tr>
  </tbody>
</table>

• Form control: .form-control, .form-control-{size} (e.g., .form-control-lg, .form-control-sm)
• Select: .form-select, .form-select-{size}
• Checkbox and radio: .form-check, .form-check-input, .form-check-label
• Range input: .form-range
• Input group: .input-group, .input-group-text
• Floating labels: .form-floating
• Validation: .is-valid, .is-invalid, .valid-feedback, .invalid-feedback

Demo:

<form>
  <div class="mb-3">
    <label for="exampleInputEmail1" class="form-label">Email address</label>
    <input type="email" class="form-control" id="exampleInputEmail1" aria-describedby="emailHelp">
    <div id="emailHelp" class="form-text">We'll never share your email with anyone else.</div>
  </div>
  <div class="mb-3">
    <label for="exampleInputPassword1" class="form-label">Password</label>
    <input type="password" class="form-control" id="exampleInputPassword1">
  </div>
  <button type="submit" class="btn btn-primary">Submit</button>
</form>

• Button styles: .btn, .btn-{variant} (e.g., .btn-primary, .btn-secondary, .btn-success, .btn-danger, .btn-warning, .btn-info, .btn-light, .btn-dark, .btn-link)
• Button sizes: .btn-lg, .btn-sm
• Block buttons: .d-grid
• Button groups: .btn-group, .btn-group-vertical

Demo:

<button class="btn btn-primary">Primary</button>
<button class="btn btn-secondary btn-lg">Large Secondary</button>

• Accordion: .accordion, .accordion-item, .accordion-header, .accordion-button, .accordion-collapse, .accordion-body
• Alerts: .alert, .alert-{variant} (e.g., .alert-primary, .alert-secondary, .alert-success, .alert-danger, .alert-warning, .alert-info, .alert-light, .alert-dark)
• Badges: .badge, .badge-{variant}
• Breadcrumb: .breadcrumb, .breadcrumb-item
• Cards: .card, .card-body, .card-title, .card-subtitle, .card-text, .card-link, .card-header, .card-footer, .card-img-top, .card-img-bottom, .card-img-overlay
• Carousel: .carousel, .carousel-item, .carousel-control-prev, .carousel-control-next, .carousel-indicators, .carousel-caption
• Collapse: .collapse, .collapsing
• Dropdowns: .dropdown, .dropdown-toggle, .dropdown-menu, .dropdown-item, .dropdown-divider, .dropdown-header
• List group: .list-group, .list-group-item, .list-group-item-{variant}
• Modal: .modal, .modal-dialog, .modal-content, .modal-header, .modal-title, .modal-body, .modal-footer
• Navs: .nav, .nav-item, .nav-link, .nav-tabs, .nav-pills
• Navbar: .navbar, .navbar-brand, .navbar-nav, .navbar-toggler, .navbar-collapse, .navbar-{color} (e.g., .navbar-light, .navbar-dark)
• Offcanvas: .offcanvas, .offcanvas-start, .offcanvas-end, .offcanvas-top, .offcanvas-bottom
• Pagination: .pagination, .page-item, .page-link
• Popovers: data-bs-toggle="popover", data-bs-content, data-bs-placement
• Progress: .progress, .progress-bar, .progress-bar-striped, .progress-bar-animated
• Spinners: .spinner-border, .spinner-grow, .spinner-{size} (e.g., .spinner-border-sm, .spinner-grow-sm)
• Toasts: .toast, .toast-header, .toast-body
• Tooltips: data-bs-toggle="tooltip", data-bs-placement

Demo:

<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <a class="navbar-brand" href="#">Navbar</a>
  <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>
  <div class="collapse navbar-collapse" id="navbarNav">
    <ul class="navbar-nav">
      <li class="nav-item">
        <a class="nav-link active" aria-current="page" href="#">Home</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Features</a>
      </li>
    </ul>
  </div>
</nav>


<div class="accordion" id="accordionExample">
  ...
</div>


<div class="alert alert-success" role="alert">
  Success alert!
</div>


<div class="dropdown">
  <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton1" data-bs-toggle="dropdown" aria-expanded="false">
    Dropdown button
  </button>
  <ul class="dropdown-menu" aria-labelledby="dropdownMenuButton1">
    <li><a class="dropdown-item" href="#">Action</a></li>
    <li><a class="dropdown-item" href="#">Another action</a></li>
    <li><a class="dropdown-item" href="#">Something else here</a></li>
  </ul>
</div>


<span class="badge bg-primary">Primary</span>


<div class="card">
  <img src="card-image.jpg" class="card-img-top" alt="Card image">
  <div class="card-body">
    <h5 class="card-title">Card title</h5>
    <p class="card-text">Card content goes here.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>


<button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#exampleModal">
  Launch demo modal
</button>

<div class="modal fade" id="exampleModal" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
      </div>
      <div class="modal-body">
        ...
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
        <button type="button" class="btn btn-primary">Save changes</button>
      </div>
    </div>
  </div>
</div>

• Borders: .border, .border-{side}, .border-{width}, .border-{color}, .rounded, .rounded-{side}, .rounded-{size}
• Colors: .text-{color}, .bg-{color}
• Display: .d-{value} (e.g., .d-none, .d-inline, .d-block, .d-grid, .d-table, .d-flex)
• Flex: .flex-{value}, .flex-{breakpoint}-{value}, .order-{value}, .align-items-{value}, .align-self-{value}, .justify-content-{value}
• Floats: .float-{side}, .float-{breakpoint}-{side}
• Interactions: .user-select-{value}, .pe-{value}, .pe-auto
• Opacity: .opacity-{value}
• Overflow: .overflow-{value}
• Position: .position-{value} (e.g., .position-static, .position-relative, .position-absolute, .position-fixed, .position-sticky)
• Shadows: .shadow, .shadow-{size}
• Sizing: .w-{value}, .h-{value}, .mw-100, .mh-100, .min-vw-100, .min-vh-100, .vw-100, .vh-100
• Spacing: .m{side}-{size}, .p{side}-{size}, .mx-auto
• Text: .text-{alignment}, .text-{wrapping}, .text-{transform}, .fw-{weight}, .fst-{style}, .lh-{value}, .text-{color}, .text-{opacity}
• Vertical align: .align-{value} (e.g., .align-baseline, .align-top, .align-middle, .align-bottom, .align-text-top, .align-text-bottom)
• Visibility: .visible, .invisible

Note: Replace {side} with t (top), b (bottom), s (start), e (end), x (horizontal), or y (vertical). Replace {size} with 0, 1, 2, 3, 4, 5, or auto. Replace {value} with the appropriate value for each utility class.

Demo:

<div class="border border-primary">Border</div>
<div class="d-flex justify-content-center">Flexbox</div>
<div class="d-flex justify-content-center align-items-center">Vertical Centered</div>
<div class="shadow-lg">Large shadow</div>
<div class="p-3 mb-2 bg-light text-dark">Light background</div>

- Alerts: `data-bs-dismiss="alert"`
- Buttons: `data-bs-toggle="button"`
- Carousel: `data-bs-ride="carousel"`, `data-bs-slide`, `data-bs-slide-to`, `data-bs-interval`
- Collapse: `data-bs-toggle="collapse"`, `data-bs-target`
- Dropdowns: `data-bs-toggle="dropdown"`
- Modals: `data-bs-toggle="modal"`, `data-bs-target`, `data-bs-backdrop`, `data-bs-keyboard`
- Offcanvas: `data-bs-toggle="offcanvas"`, `data-bs-target`, `data-bs-backdrop`, `data-bs-scroll`
- Popovers: `data-bs-toggle="popover"`, `data-bs-trigger`, `data-bs-placement`, `data-bs-content`, `data-bs-animation`
- Scrollspy: `data-bs-spy="scroll"`, `data-bs-target`, `data-bs-offset`
- Toasts: `data-bs-autohide`, `data-bs-delay`
- Tooltips: `data-bs-toggle="tooltip"`, `data-bs-placement=[top|right|bottom|left]`, `data-bs-trigger`, `data-bs-animation`

Demo:

<div id="carouselExampleIndicators" class="carousel slide" data-bs-ride="carousel">
  <div class="carousel-indicators">
    <button type="button" data-bs-target="#carouselExampleIndicators" data-bs-slide-to="0" class="active" aria-current="true" aria-label="Slide 1"></button>
    <button type="button" data-bs-target="#carouselExampleIndicators" data-bs-slide-to="1" aria-label="Slide 2"></button>
    <button type="button" data-bs-target="#carouselExampleIndicators" data-bs-slide-to="2" aria-label="Slide 3"></button>
  </div>
  <div class="carousel-inner">
    <div class="carousel-item active">
      <img src="..." class="d-block w-100" alt="...">
    </div>
    <div class="carousel-item">
      <img src="..." class="d-block w-100" alt="...">
    </div>
    <div class="carousel-item">
      <img src="..." class="d-block w-100" alt="...">
    </div>
  </div>
  <button class="carousel-control-prev" type="button" data-bs-target="#carouselExampleIndicators" data-bs-slide="prev">
    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
    <span class="visually-hidden">Previous</span>
  </button>
  <button class="carousel-control-next" type="button" data-bs-target="#carouselExampleIndicators" data-bs-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="visually-hidden">Next</span>
  </button>
</div>


<button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#exampleModal">
  Open Modal
</button>
<div class="modal fade" id="exampleModal" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true">
  ...
</div>


<div class="toast" role="alert" aria-live="assertive" aria-atomic="true">
  <div class="toast-header">
    <img src="..." class="rounded me-2" alt="...">
    <strong class="me-auto">Bootstrap</strong>
    <small class="text-muted">11 mins ago</small>
    <button type="button" class="btn-close" data-bs-dismiss="toast" aria-label="Close"></button>
  </div>
  <div class="toast-body">
    Hello, world! This is a toast message.
  </div>
</div>


<button type="button" class="btn btn-secondary" data-bs-toggle="tooltip" data-bs-placement="top" title="Tooltip on top">
  Tooltip on top
</button>

• Sass variables: Override default values or create new variables
• Sass maps: Modify color maps, grid breakpoints, and more
• Sass mixins: Use pre-defined mixins for common styles and responsive utilities
• CSS variables: Use CSS custom properties for easy customization
• Build tools: Utilize Bootstrap's build tools to compile Sass, minify CSS and JavaScript, and more

Demo:

// Custom Sass variables
$primary: #007bff;
$font-family-base: 'Custom Font', sans-serif;

// Custom CSS
.custom-class {
  color: $primary;
  font-family: $font-family-base;
}

• ARIA attributes: Use appropriate ARIA attributes for improved accessibility
• Keyboard navigation: Ensure components are keyboard-navigable and follow logical focus order
• Color contrast: Maintain sufficient color contrast for text and interactive elements
• Semantic markup: Use semantic HTML elements and proper heading structure

Demo:

<button type="button" class="btn btn-primary" aria-label="Submit">
  <i class="fas fa-check"></i>
</button>

• Responsive display: .d-{breakpoint}-{value}
• Responsive flex: .flex-{breakpoint}-{value}, .order-{breakpoint}-{value}, .align-items-{breakpoint}-{value}, .align-self-{breakpoint}-{value}, .justify-content-{breakpoint}-{value}
• Responsive floats: .float-{breakpoint}-{side}
• Responsive margin and padding: .m{breakpoint}-{side}-{size}, .p{breakpoint}-{side}-{size}
• Responsive text alignment: .text-{breakpoint}-{alignment}

Demo:

<div class="d-none d-md-block">Visible on medium screens and up</div>
<div class="text-center text-md-start">Center-aligned on small screens, left-aligned on medium screens and up</div>

• RTL-specific classes: .rtl
• RTL-aware components: Dropdowns, carousel, offcanvas, and more
• RTL-specific utilities: .me-{size}, .ps-{size}, .pe-{size}, .text-end.

Demo:

<div class="rtl">
  <div class="me-3">RTL margin</div>
</div>

• Bootstrap v5 includes a set of high-quality, open-source icons called Bootstrap Icons
• Over 1,300 icons available in SVG format
• Icons can be easily customized with CSS
• Inline usage via  elements or background-image
• Icon font usage via  elements or ::before pseudo-elements
• Sprite usage by referencing external SVG sprite sheet
• Accessible icons with aria-label or aria-hidden attributes
• Icon variations: filled, outline, and sized.

Demo:

<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-star" viewBox="0 0 16 16">
  <path d="M2.866 14.85c-.078.444.36.791.746.593l4.39-2.256 4.389 2.256c.386.198.824-.149.746-.592l-.83-4.73 3.522-3.356c.33-.314.16-.888-.282-.95l-4.898-.696L8.465.792a.513.513 0 0 0-.927 0L5.354 5.12l-4.898.696c-.441.062-.612.636-.283.95l3.523 3.356-.83 4.73zm4.905-2.767-3.686 1.894.694-3.957a.565.565 0 0 0-.163-.505L1.71 6.745l4.052-.576a.525.525 0 0 0 .393-.288L8 2.223l1.847 3.658a.525.525 0 0 0 .393.288l4.052.575-2.906 2.77a.565.565 0 0 0-.163.506l.694 3.957-3.686-1.894a.503.503 0 0 0-.461 0z"/>
</svg>


<i class="bi bi-star"></i>


<svg class="bi" width="16" height="16" fill="currentColor">
  <use xlink:href="bootstrap-icons.svg#star"/>
</svg>