要将元素浮动到Bootstrap的左侧，请使用float-left类。
使用该类，将元素设置在左侧，如下所示：
<p class="float-left"> I am on the left. </p>
将其设置在其他元素上，例如<h1>，<h2>，<div>等-
<h1 class="float-left"> Heading is on the left. </h1>
您可以尝试运行以下代码以将元素放置在左侧-
<!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/4.1.0/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.3.1/jquery.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script> </head> <body> <div class="container"> <h2>Demo</h2> <div class="clearfix"> <p class="float-left">I am on the left.</p><br> <p class="float-right">I am on the right.</p><br> <p class="float-left">I am on the left.</p><br> <p class="float-right">I am on the right.</p> </div> </div> </body> </html>