<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>
<style>
#myInput {
padding: 20px;
margin-top: -6px;
border: 0;
border-radius: 0;
background: #f1f1f1;
}
</style>
</head>
<body>
<div class="container">
<h2>Filterable Dropdown</h2>
<p>Open the dropdown menu and type something in the input field to search for dropdown items:</p>
<p>Note that we have styled the input field to fit the dropdown items.</p>
<div class="dropdown">
<button class="btn btn-primary dropdown-toggle" type="button" data-toggle="dropdown">Dropdown Example
<span class="caret"></span></button>
<ul class="dropdown-menu">