<div class="container">: Creates a container with fixed width for layout elements.<div class="row">: Defines a row within a container to organize content horizontally.<div class="col"> or <div class="col-{breakpoint}-{number}">: Specifies column classes to create responsive grid layouts.<img class="img-fluid">: Ensures images are responsive and fluid within their parent containers.<button class="btn">: Creates a button.<a class="btn">: Creates a button-like link.<nav class="navbar navbar-expand">: Defines a navigation bar.<ul class="navbar-nav">: Defines an unordered list within a navigation bar.<li class="nav-item">: Defines a list item within a navigation bar.<form class="form">: Defines a form.<input class="form-control">: Creates an input field within a form.<label class="form-label">: Creates a label for form elements.<textarea class="form-control">: Creates a textarea input within a form.<select class="form-select">: Creates a dropdown menu within a form.<table class="table">: Creates a responsive table.<thead class="thead-dark">: Styles the header of a table with a dark background.<tbody>: Defines the body of a table.<tfoot>: Defines the footer of a table.<tr>: Defines a row within a table.<th>: Defines a table header cell.<td>: Defines a table data cell.<alert class="alert">: Creates an alert message.<badge class="badge">: Creates a badge.<card class="card">: Creates a card.<carousel class="carousel">: Creates a carousel/slider.<jumbotron class="jumbotron">: Creates a large showcase area typically used at the top of a page.<breadcrumb class="breadcrumb">: Creates a breadcrumb navigation for indicating the current page’s location within a hierarchy.<pagination class="pagination">: Creates pagination links for splitting content across multiple pages.<progress class="progress">: Creates a progress bar to show the completion status of a task.<badge class="badge">: Creates a small badge to highlight certain information, often used for notifications or labels.<spinner class="spinner-border"> or <spinner class="spinner-grow">: Creates a loading spinner animation.<modal class="modal">: Creates a modal dialog or popup window for displaying additional content or forms.<tooltip data-bs-toggle="tooltip" title="Tooltip text">: Adds a tooltip to an element.<popover data-bs-toggle="popover" title="Popover Title" data-bs-content="Popover Content">: Adds a popover to an element.<collapse class="collapse">: Creates a collapsible element that can be toggled to show or hide content.<accordion class="accordion">: Creates an accordion-style collapsible content area.<carousel class="carousel">: Creates a slideshow of images or content that cycles through items.<dropdown class="dropdown">: Creates a dropdown menu.<list-group class="list-group">: Creates a list group, useful for displaying lists of content.<media class="media">: Creates a media object for displaying images, video, or other media alongside textual content.<navbar-toggler class="navbar-toggler">: Creates a toggler button for collapsible navigation bars on smaller screens.<navbar-text class="navbar-text">: Adds plain text to a navigation bar.<navbar-collapse class="navbar-collapse">: Wraps collapsible content within a navigation bar.<navbar-brand class="navbar-brand">: Adds branding (e.g., a logo or brand name) to a navigation bar.<navbar-nav class="navbar-nav">: Wraps navigation links within a navigation bar.<pagination class="pagination">: Creates pagination links for navigating through multiple pages of content.These are just a few examples of commonly used Bootstrap tags. There are many more components and utility classes provided by Bootstrap for building responsive and attractive web interfaces.