1.How Create a Columns In Bootstrap
<!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-fluid"> <h1>Basic Grid Structure</h1> <p>Resize the browser window to see the effect.</p> <p>The first, second and third row will automatically stack on top of each other when the screen is less than 576px wide.</p> <div class="container-fluid"> <!-- Control the column width, and how they should appear on different devices --> <div class="row"> <div class="col-sm-6" style="background-color:yellow;">50%</div> <div class="col-sm-6" style="background-color:orange;">50%</div> </div> <br> <div class="row"> <div class="col-sm-4" style="background-color:yellow;">33.33%</div> <div class="col-sm-4" style="background-color:orange;">33.33%</div> <div class="col-sm-4" style="background-color:yellow;">33.33%</div> </div> <br> <!-- Or let Bootstrap automatically handle the layout --> <div class="row"> <div class="col-sm" style="background-color:yellow;">25%</div> <div class="col-sm" style="background-color:orange;">25%</div> <div class="col-sm" style="background-color:yellow;">25%</div> <div class="col-sm" style="background-color:orange;">25%</div> </div> <br> <div class="row"> <div class="col" style="background-color:yellow;">25%</div> <div class="col" style="background-color:orange;">25%</div> <div class="col" style="background-color:yellow;">25%</div> <div class="col" style="background-color:orange;">25%</div> </div> </div> </div> </body> </html>