1.How To Create Utility In Bootstrap Example-1
<!DOCTYPE html> <html lang="en"> <head> <title>Bootstrap Example</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script> <style> .border { display: inline-block; width: 70px; height: 70px; margin: 6px; } </style> </head> <body> <div class="container"> <h2>Borders</h2> <p>Use a contextual border color to add a color to the border:</p> <span class="border border-primary"></span> <span class="border border-secondary"></span> <span class="border border-success"></span> <span class="border border-danger"></span> <span class="border border-warning"></span> <span class="border border-info"></span> <span class="border border-light"></span> <span class="border border-dark"></span> <span class="border border-white"></span> </div> </body> </html>
<!DOCTYPE html> <html lang="en"> <head> <title>Bootstrap Example</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script> </head> <body> <div class="container"> <h1>Shadows</h1> <p>Use the shadow- classes to to add shadows to an element:</p> <div class="shadow-none p-4 mb-4 bg-light">No shadow</div> <div class="shadow-sm p-4 mb-4 bg-white">Small shadow</div> <div class="shadow p-4 mb-4 bg-white">Default shadow</div> <div class="shadow-lg p-4 mb-4 bg-white">Large shadow</div> </div> </body> </html>
<!DOCTYPE html> <html lang="en"> <head> <title>Bootstrap Example</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script> </head> <body style="height:1500px"> <div class="container-fluid"> <br> <h3>Sticky Navbar</h3> <p>A sticky navigation bar stays fixed at the top of the page when you scroll past it.</p> <p>Scroll this page to see the effect. <strong>Note:</strong> sticky-top does not work in IE11 and earlier.</p> </div> <nav class="navbar navbar-expand-sm bg-dark navbar-dark sticky-top"> <a class="navbar-brand" href="#">Logo</a> <ul class="navbar-nav"> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> </ul> </nav> <div class="container-fluid"><br> <p>Some example text. Some example text. Some example text. Some example text. Some example text.</p> <p>Some example text. Some example text. Some example text. Some example text. Some example text.</p> <p>Some example text. Some example text. Some example text. Some example text. Some example text.</p> <p>Some example text. Some example text. Some example text. Some example text. Some example text.</p> </div> </body> </html>