Webmastertoolbag Tryit Editor

<!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 href="none" rel="stylesheet">
  
</head>
<body>

<div class="container mt-3">
  <h2>Select Menu Size</h2>
  <p>Use the .form-select-lg or .form-select-sm class to change the size of the select menu:</p>
  
   <select class="form-select form-select-lg">
     <option>1</option>
     <option>2</option>
     <option>3</option>
     <option>4</option>
   </select>
   
   <select class="form-select mt-3">
     <option>1</option>
     <option>2</option>
     <option>3</option>
     <option>4</option>
   </select>
   
   <select class="form-select form-select-sm mt-3">
     <option>1</option>
     <option>2</option>
     <option>3</option>
     <option>4</option>
   </select>
      
</div>