    <div class="row">
        <div class="col-12">
            <pre class="with-hljs"><code class="lang-php">&lt;?php
include(&quot;db/cn.php&quot;);
ini_set(&#039;display_errors&#039;, 1);
ini_set(&#039;display_startup_errors&#039;, 1);
error_reporting(E_ALL);

//session_start();

if (isset($_SESSION[&#039;user_name&#039;], $_SESSION[&#039;user_role&#039;], $_SESSION[&#039;outlet_name&#039;], $_SESSION[&#039;outlet_address&#039;])) {
    $userName = $_SESSION[&#039;user_name&#039;];
    $userRole = $_SESSION[&#039;user_role&#039;];
    $outlet_address = $_SESSION[&#039;outlet_address&#039;];
    $outlet_name = $_SESSION[&#039;outlet_name&#039;];
}

$customer_name = isset($_GET[&#039;school_name&#039;]) ? trim($_GET[&#039;school_name&#039;]) : &#039;&#039;;

if ($_SERVER[&quot;REQUEST_METHOD&quot;] == &quot;POST&quot;) {
    $school_name = $customer_name;
    $class_name = $_POST[&#039;class_name&#039;];
    $course_names = $_POST[&#039;course_name&#039;] ?? [];
    $rack_numbers = $_POST[&#039;rack_number&#039;] ?? [];
    $companies = $_POST[&#039;company&#039;] ?? [];
    $publishers = $_POST[&#039;publisher&#039;] ?? [];
    $trade_prices = $_POST[&#039;trade_price&#039;] ?? [];
    $prices = $_POST[&#039;price&#039;] ?? [];
    $percentages = $_POST[&#039;percentage&#039;] ?? [];
    $per_amounts = $_POST[&#039;per_amount&#039;] ?? [];

    // Validate all input fields
    $totalCourses = count($course_names);
    if (
        !empty($school_name) &amp;&amp; 
        !empty($class_name) &amp;&amp; 
        $totalCourses &gt; 0 &amp;&amp;
        $totalCourses === count($rack_numbers) &amp;&amp;
        $totalCourses === count($companies) &amp;&amp;
        $totalCourses === count($publishers) &amp;&amp;
        $totalCourses === count($trade_prices) &amp;&amp;
        $totalCourses === count($prices) &amp;&amp;
        $totalCourses === count($percentages) &amp;&amp;
        $totalCourses === count($per_amounts)
    ) {
        // Validation for trade_price and other numeric fields
        foreach ($trade_prices as $price) {
            if (!is_numeric($price) || $price &lt; 0) {
                echo &quot;Invalid trade price value detected.&quot;;
                exit;
            }
        }

        $courseStmt = $connection-&gt;prepare(
            &quot;INSERT INTO courses (school_name, class_name, course_name, rack_number, company, publisher, trade_price, price, percentage, per_amount) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)&quot;
        );

        if ($courseStmt === false) {
            die(&quot;Error preparing statement: &quot; . $connection-&gt;error);
        }

        foreach ($course_names as $index =&gt; $course_name) {
            $rack_number = $rack_numbers[$index];
            $company = $companies[$index];
            $publisher = $publishers[$index];
            $trade_price = $trade_prices[$index];
            $price = $prices[$index];
            $percentage = $percentages[$index];
            $per_amount = $per_amounts[$index];

            $courseStmt-&gt;bind_param(
                &quot;ssssssssss&quot;, // Corrected type specifiers
                $school_name,
                $class_name,
                $course_name,
                $rack_number,
                $company,
                $publisher,
                $trade_price,
                $price,
                $percentage,
                $per_amount
            );

            if (!$courseStmt-&gt;execute()) {
                echo &quot;Error executing statement: &quot; . $courseStmt-&gt;error;
                exit;
            }
        }

        echo &quot;Courses added successfully for school: &quot; . htmlspecialchars($school_name);
    } else {
        echo &quot;Please fill in all fields and ensure course details are consistent.&quot;;
    }
}
?&gt;



&lt;!DOCTYPE html PUBLIC &quot;-//W3C//DTD XHTML 1.0 Transitional//EN&quot; &quot;http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd&quot;&gt;
&lt;html xmlns=&quot;http://www.w3.org/1999/xhtml&quot;&gt;
&lt;head&gt;
    &lt;meta http-equiv=&quot;Content-Type&quot; content=&quot;text/html; charset=utf-8&quot; /&gt;
    &lt;title&gt;Courses - Detail&lt;/title&gt;
    &lt;!-- Latest compiled and minified CSS --&gt;
&lt;link rel=&quot;stylesheet&quot; href=&quot;https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css&quot;&gt;
&lt;link rel=&quot;stylesheet&quot; href=&quot;https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css&quot;&gt;
&lt;link rel=&quot;stylesheet&quot; href=&quot;css/custom_css.css&quot; /&gt;


&lt;/head&gt;

&lt;style&gt;
 #table-container-wrapper {
    max-height: 400px; /* Adjust the maximum height as needed */
    overflow-y: auto; /* Enable vertical scroll when content overflows */
}
/* Custom styles for sidebar */    /* Custom styles for sidebar */
    .sidebar {
        width: 100px;
        background: linear-gradient(360deg, #060606, #3C2F23);
        position: fixed;
        bottom: 0;
        top: 60px;
        transition: transform 0.3s ease-in-out;
        transform: translateX(0);
        z-index: 1;
        height: 100%;
        border-radius: 0px;
		   transition: transform 0.3s ease-in-out, width 0.3s ease-in-out;
    }.sidebar.hide {
      transform: translateX(-100px); /* Move sidebar out of the viewport when it is hidden */
    }
      .sidebar .nav-item {
    padding: 10px 0 ;
    text-align: center;
    position: relative;
	font-size:12px;
}
    .sidebar .nav-link {
      color: #fff;
      position: relative; /* Ensure icon and text are positioned relative to the nav link */
      z-index: 2; /* Ensure the text and icon are above the hover background */
    }
    .sidebar .nav-link i {
      margin-bottom: 5px; /* Adjust the margin of the icon */
    }
    /* Custom styles for hover effect */
    .sidebar .nav-item:hover:after {
      background-color: #fff;
      content: &#039;&#039;;
      position: absolute;
      left: 0;
      bottom: 0;
      width: 100%;
      height: 100%;
      z-index: 1; /* Ensure the hover background is below the text and icon */
    }
    .sidebar .nav-item:hover .nav-link {
      color: #503F2E;
    }
    /* Custom styles for divider */
    .sidebar .nav-item:after {
      content: &quot;&quot;;
      position: absolute;
      left: 0;
      bottom: 0;
      width: 100%;
      height: 1px;
      background-color: #fff;
      transition: height 0.3s ease-in-out; /* Transition effect for smooth animation */
    }
    /* Custom styles for header */ 
	   .header {
        background: linear-gradient(270deg, #060606, #3C2F23);
        color: #fff;
        padding: 10px;
        position: fixed;
        top: 0;
        width: 100%;
        z-index: 2;
        height: 69px;
        box-shadow: #FFF 2px 0px 0px 0px;
        /* Ensure header appears above sidebar */
    }
    .header .navbar-toggler {
      color: #fff;
    }
    .header .navbar-toggler-icon {
      color: #fff; /* Set the color of the toggle button to white */
    }
    .header .navbar-toggler.white {
      color: #fff !important; /* Ensure the toggle button is white */
    }
    .header .navbar-brand {
      color: #fff; /* Set navbar brand text color to white */
    }
    .header .nav-item .nav-link {
      color: #fff; /* Set nav link text color to white */
    }
    .main-content {
      margin-top: 50px; /* Height of fixed header + padding */
      margin-left: 100px; /* Width of sidebar */
      padding-top: 30px; /* Height of fixed header */
    }
	/* Custom styles for search bar */
    .search-container {
      display: flex;
      align-items: center;
      width: 300px;
      margin: 2px auto;
    }
    .search-input {
      width: 100%;
      padding: 10px 30px 10px 10px; /* Adjust padding to accommodate the icon */
      border: 1px solid #ccc;
      border-radius: 20px;
      font-size: 16px;
    }
    .search-icon {
      position: relative;
      left: -25px; /* Adjust the position of the icon */
      color: #aaa;
    }
    .search-icon i {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
    }
.btn-dark
         {
			 background:#503F2E;
			 color:#fff;
			 border: 1px solid #503F2E;
                 	}
		.btn-dark:hover{
			background:#fff;
			 color:#503F2E;
			 border:1px solid #503F2E;
			}	
			.bg-dark2{
			background:#503F2E;
			color:#fff;	
				}	
	
	 .modal-content {
            animation: modal-animation 0.5s;
        }

        @keyframes modal-animation {
            from {
                opacity: 0;
                transform: scale(0.8);
            }
            to {
                opacity: 1;
                transform: scale(1);
            }
        }
		
		/* Basic styling */
    .tab {
        display: none;
        padding: 20px;
    }
    .active {
        display: block;
    }
    .tab-buttons {
        display: flex;
    }
    .tab-button {
        cursor: pointer;
        padding: 10px 10px;
        background-color: #ffff;
        border: 1px solid #0A5064;
        border-radius: 5px 5px 0 0;
        margin-right: 5px;
		color:#212529;
    }
    .tab-button.active {
        background-color: #212529;
		color:#fff;
    }

    /* Background colors for tab content */
    #tab1 {
        background-color: #fff;
		color:#212529;
		padding:20px;
    }
    #tab2 {
        color:#212529;
		background-color: ;
    }
    #tab3 {
		color:#212529;
        background-color: ;
    }
&lt;/style&gt;

&lt;body&gt;

&lt;?php include(&quot;common/hd.php&quot;);?&gt;
&lt;!-- Sidebar --&gt;
&lt;?php include(&quot;common/sd.php&quot;); ?&gt;
&lt;div class=&quot;main-content&quot;&gt;
&lt;br /&gt;
&lt;div class=&quot;container&quot;&gt;
    &lt;div class=&quot;row&quot;&gt;
        &lt;div class=&quot;col-sm-4&quot;&gt;
            &lt;h3 class=&quot;mb-2 mt-2&quot;&gt;Courses Detail&lt;/h3&gt;
            
        &lt;/div&gt;
        &lt;div class=&quot;col-sm-5&quot;&gt;&lt;/div&gt;
        &lt;div class=&quot;col-sm-3&quot;&gt;
            &lt;h3 style=&quot;background:#060606; padding:20px; border-radius:10px;font-size:18px; color:#fff; font-weight:600; text-align:center;&quot;&gt;&lt;?php echo $customer_name; ?&gt;&lt;/h3&gt;
            
        &lt;/div&gt;
        
    &lt;/div&gt;
&lt;/div&gt;
&lt;div class=&quot;container&quot;&gt;
    &lt;div class=&quot;row&quot;&gt;
        &lt;div class=&quot;col-sm-9&quot;&gt;
            &lt;?php
            $rec = mysqli_query($connection,&quot;select * from courses where school_name = &#039;$customer_name&#039; GROUP BY class_name &quot;);
            ?&gt;
            &lt;table class=&quot;table table-bordered table-hover text-center text-uppercase&quot;&gt;
                &lt;tr class=&quot;bg-dark text-white&quot;&gt;
                    &lt;th&gt;Sr#&lt;/th&gt;
                    &lt;th&gt;Class Name&lt;/th&gt;
                    &lt;th&gt;View&lt;/th&gt;
                    &lt;th&gt;Edit&lt;/th&gt;
                    &lt;th&gt;Sale&lt;/th&gt;
                &lt;/tr&gt;
                &lt;?php 
                $sr_no = 1;
                while($row = mysqli_fetch_array($rec)){
                ?&gt;
                &lt;tr&gt;
                    &lt;td&gt;&lt;?php echo $sr_no++; ?&gt;&lt;/td&gt;
                    &lt;td&gt;&lt;?php echo $row[&quot;class_name&quot;]; ?&gt;&lt;/td&gt;
                    &lt;td&gt;&lt;a href=&quot;view_course.php?class_name=&lt;?php echo $row[&quot;class_name&quot;]; ?&gt;&amp;&amp;school_name=&lt;?php echo $customer_name;?&gt;&quot;&gt;&lt;button type=&quot;button&quot; class=&quot;btn btn-dark btn-sm&quot;&gt;View&lt;/button&gt;&lt;/a&gt;&lt;/td&gt;
                    &lt;td&gt;&lt;a href=&quot;edit_course.php?class_name=&lt;?php echo $row[&quot;class_name&quot;]; ?&gt;&amp;&amp;school_name=&lt;?php echo $customer_name;?&gt;&quot;&gt;&lt;button type=&quot;button&quot; class=&quot;btn btn-dark btn-sm&quot;&gt;Edit&lt;/button&gt;&lt;/a&gt;&lt;/td&gt;
                    &lt;td&gt;&lt;a href=&quot;sale_course.php?class_name=&lt;?php echo $row[&quot;class_name&quot;]; ?&gt;&amp;&amp;school_name=&lt;?php echo $customer_name;?&gt;&quot;&gt;&lt;button class=&quot;btn btn-dark btn-sm&quot;&gt;Sale&lt;/button&gt;&lt;/a&gt;&lt;/td&gt;
                &lt;/tr&gt;
                &lt;?php
                }
                ?&gt;
            &lt;/table&gt;
            
            
        &lt;/div&gt;
        &lt;div class=&quot;col-sm-3&quot;&gt;
            &lt;button type=&quot;button&quot; class=&quot;btn btn-dark&quot; data-toggle=&quot;modal&quot; data-target=&quot;#addCoursesModal&quot;&gt;
                Add Courses for a School
            &lt;/button&gt;
            &lt;br&gt;
            &lt;a href=&quot;course.php&quot;&gt;&lt;button type=&quot;button&quot; class=&quot;btn btn-dark btn-sm&quot; style=&quot;margin-top:10px;&quot;&gt;Back&lt;/button&gt;&lt;/a&gt;
        &lt;/div&gt;
    &lt;/div&gt;

    &lt;!-- Modal --&gt;
    &lt;div class=&quot;modal fade&quot; id=&quot;addCoursesModal&quot; tabindex=&quot;-1&quot; aria-labelledby=&quot;addCoursesModalLabel&quot; aria-hidden=&quot;true&quot; style=&quot;&quot;&gt;
        &lt;div class=&quot;modal-dialog modal-lg&quot;&gt;
            &lt;div class=&quot;modal-content&quot;&gt;
                &lt;div class=&quot;modal-header&quot;&gt;
                    &lt;h5 class=&quot;modal-title&quot; id=&quot;addCoursesModalLabel&quot;&gt;Add Courses for a School&lt;/h5&gt;
                    &lt;button type=&quot;button&quot; class=&quot;close&quot; data-dismiss=&quot;modal&quot; aria-label=&quot;Close&quot;&gt;
                        &lt;span aria-hidden=&quot;true&quot;&gt;&amp;times;&lt;/span&gt;
                    &lt;/button&gt;
                &lt;/div&gt;
                &lt;div class=&quot;modal-body&quot;&gt;
                    &lt;form action=&quot;course_detail.php?school_name=&lt;?php echo $customer_name; ?&gt;&quot; method=&quot;post&quot; id=&quot;courseForm&quot; enctype=&quot;multipart/form-data&quot;&gt;
                        &lt;div class=&quot;form-group&quot;&gt;
                            &lt;label for=&quot;school_name&quot;&gt;School Name:&lt;/label&gt;
                            &lt;select class=&quot;form-control&quot; id=&quot;school_name&quot; name=&quot;school_name&quot; required style=&quot;width:304px;&quot;&gt;
                                &lt;option value=&quot;&lt;?php echo $customer_name; ?&gt;&quot;&gt;&lt;?php echo $customer_name; ?&gt;&lt;/option&gt;
                            &lt;/select&gt;
                        &lt;/div&gt;
                        &lt;div class=&quot;form-group&quot;&gt;
                            &lt;label for=&quot;school_name&quot;&gt;Class Name:&lt;/label&gt;
                            &lt;input type=&quot;text&quot; class=&quot;form-control&quot; id=&quot;class_name&quot; name=&quot;class_name&quot; required style=&quot;width:304px;&quot;&gt;
                                
                        &lt;/div&gt;

                        &lt;h5&gt;Course Details&lt;/h5&gt;
                            &lt;table class=&quot;table&quot; id=&quot;courseTable&quot; style=&quot;width:700px;&quot;&gt;
                                &lt;thead&gt;
                                    &lt;tr&gt;
                                        &lt;th&gt;Course Name&lt;/th&gt;
                                        
                                        &lt;th&gt;Company&lt;/th&gt;
                                        &lt;th&gt;Supplier&lt;/th&gt;
                                        &lt;th&gt;Trade Price&lt;/th&gt;
                                        &lt;th&gt;Price(Rs)&lt;/th&gt;
                                        &lt;th&gt;Percentage&lt;/th&gt;
                                        &lt;th&gt;% Amount&lt;/th&gt;
                                        &lt;th&gt;Rack Number&lt;/th&gt;
                                        &lt;th&gt;Action&lt;/th&gt;
                                    &lt;/tr&gt;
                                &lt;/thead&gt;
                                &lt;tbody&gt;
                                    &lt;!-- Dynamic rows will be added here --&gt;
                                &lt;/tbody&gt;
                            &lt;/table&gt;
                            &lt;button type=&quot;button&quot; class=&quot;btn btn-success&quot; id=&quot;addCourseRow&quot;&gt;Add Course&lt;/button&gt;
                    &lt;/form&gt;
                &lt;/div&gt;
                &lt;div class=&quot;modal-footer&quot;&gt;
                    &lt;button type=&quot;submit&quot; class=&quot;btn btn-primary&quot; form=&quot;courseForm&quot;&gt;Save Courses&lt;/button&gt;
                    &lt;button type=&quot;button&quot; class=&quot;btn btn-secondary&quot; data-dismiss=&quot;modal&quot;&gt;Close&lt;/button&gt;
                &lt;/div&gt;
            &lt;/div&gt;
        &lt;/div&gt;
    &lt;/div&gt;
&lt;/div&gt;

&lt;/div&gt;    
&lt;/body&gt;
&lt;script&gt;
   document.addEventListener(&quot;DOMContentLoaded&quot;, function () {
    const addCourseRowButton = document.getElementById(&quot;addCourseRow&quot;);
    const courseTableBody = document.querySelector(&quot;#courseTable tbody&quot;);

    // Add a new row when clicking the Add Course button
    if (addCourseRowButton) {
        addCourseRowButton.addEventListener(&quot;click&quot;, function () {
            const newRow = document.createElement(&quot;tr&quot;);

            newRow.innerHTML = `
                &lt;td&gt;&lt;input type=&quot;text&quot; name=&quot;course_name[]&quot; class=&quot;form-control&quot; required placeholder=&quot;Course Name&quot;&gt;&lt;/td&gt;
                &lt;td&gt;&lt;input type=&quot;text&quot; name=&quot;company[]&quot; class=&quot;form-control&quot; required placeholder=&quot;Company&quot;&gt;&lt;/td&gt;
                &lt;td&gt;&lt;input type=&quot;text&quot; name=&quot;publisher[]&quot; class=&quot;form-control&quot; required placeholder=&quot;Supplier&quot;&gt;&lt;/td&gt;
                &lt;td&gt;&lt;input type=&quot;text&quot; name=&quot;trade_price[]&quot; class=&quot;form-control&quot; required placeholder=&quot;Trade Price&quot;&gt;&lt;/td&gt;
                &lt;td&gt;&lt;input type=&quot;number&quot; name=&quot;price[]&quot; class=&quot;form-control price&quot; required placeholder=&quot;Price&quot;&gt;&lt;/td&gt;
                &lt;td&gt;&lt;input type=&quot;number&quot; name=&quot;percentage[]&quot; class=&quot;form-control percentage&quot; required placeholder=&quot;Percentage&quot;&gt;&lt;/td&gt;
                &lt;td&gt;&lt;input type=&quot;number&quot; name=&quot;per_amount[]&quot; class=&quot;form-control per_amount&quot; readonly placeholder=&quot;Amount&quot;&gt;&lt;/td&gt;
                &lt;td&gt;&lt;input type=&quot;text&quot; name=&quot;rack_number[]&quot; class=&quot;form-control&quot; required placeholder=&quot;Rack No&quot;&gt;&lt;/td&gt;
                &lt;td&gt;&lt;button type=&quot;button&quot; class=&quot;btn btn-danger removeCourseRow&quot;&gt;x&lt;/button&gt;&lt;/td&gt;
            `;

            courseTableBody.appendChild(newRow);
        });
    }

    // Add event delegation to handle dynamic percentage calculations
    courseTableBody.addEventListener(&quot;input&quot;, function (event) {
        if (event.target.classList.contains(&quot;percentage&quot;) || event.target.classList.contains(&quot;price&quot;)) {
            const row = event.target.closest(&quot;tr&quot;);
            const priceInput = row.querySelector(&quot;.price&quot;);
            const percentageInput = row.querySelector(&quot;.percentage&quot;);
            const amountInput = row.querySelector(&quot;.per_amount&quot;);

            const price = parseFloat(priceInput.value) || 0;
            const percentage = parseFloat(percentageInput.value) || 0;

            // Calculate the percentage amount
            const amount = (price * percentage) / 100;

            // Update the % Amount field
            amountInput.value = amount.toFixed(2);
        }
    });

    // Add event delegation to handle removing rows
    courseTableBody.addEventListener(&quot;click&quot;, function (event) {
        if (event.target &amp;&amp; event.target.classList.contains(&quot;removeCourseRow&quot;)) {
            const rowToRemove = event.target.closest(&quot;tr&quot;);
            if (rowToRemove) {
                courseTableBody.removeChild(rowToRemove);
            }
        }
    });
});

&lt;/script&gt;
&lt;script&gt;
 // Function to switch between tabs
    function openTab(evt, tabName) {
        // Get all elements with class=&quot;tab&quot; and hide them
        var tabs = document.getElementsByClassName(&quot;tab&quot;);
        for (var i = 0; i &lt; tabs.length; i++) {
            tabs[i].style.display = &quot;none&quot;;
        }

        // Get all elements with class=&quot;tab-button&quot; and remove the class &quot;active&quot;
        var tabButtons = document.getElementsByClassName(&quot;tab-button&quot;);
        for (var i = 0; i &lt; tabButtons.length; i++) {
            tabButtons[i].classList.remove(&quot;active&quot;);
        }

        // Show the current tab, and add an &quot;active&quot; class to the button that opened the tab
        document.getElementById(tabName).style.display = &quot;block&quot;;
        evt.currentTarget.classList.add(&quot;active&quot;);
    }
  document.addEventListener(&quot;DOMContentLoaded&quot;, function () {
    var sidebar = document.getElementById(&quot;sidebar&quot;);
    var overlay = document.createElement(&quot;div&quot;);
    overlay.classList.add(&quot;overlay&quot;);
    document.body.appendChild(overlay);

    function toggleSidebar() {
        sidebar.classList.toggle(&quot;hide&quot;);
        overlay.classList.toggle(&quot;hide&quot;);

        var mainContent = document.querySelector(&quot;.main-content&quot;);
        if (sidebar.classList.contains(&quot;hide&quot;)) {
            mainContent.style.marginLeft = &quot;0&quot;;
        } else {
            mainContent.style.marginLeft = &quot;100px&quot;; // Width of the sidebar
        }
    }

    overlay.addEventListener(&quot;click&quot;, function () {
        toggleSidebar();
    });

    // Add toggle functionality to navbar toggler
    var navbarToggler = document.querySelector(&quot;.navbar-toggler&quot;);
    navbarToggler.addEventListener(&quot;click&quot;, function () {
        toggleSidebar();
    });

    // Automatically hide sidebar on all screen sizes
    // sidebar.classList.add(&quot;hide&quot;);
    // overlay.classList.add(&quot;hide&quot;);
    
    // Add class to body to prevent scrolling when sidebar is open
    // document.body.classList.add(&quot;noscroll&quot;);

    // Check if screen size is larger than a certain threshold (e.g., 768px for desktop screens)
    function checkScreenSize() {
        if (window.innerWidth &gt; 768) {
            sidebar.classList.remove(&quot;hide&quot;);
            overlay.classList.remove(&quot;hide&quot;);
        } else {
            sidebar.classList.add(&quot;hide&quot;);
            overlay.classList.add(&quot;hide&quot;);
        }
    }

    // Check screen size on initial load and whenever the window is resized
    checkScreenSize();
    window.addEventListener(&quot;resize&quot;, checkScreenSize);
});
 
	&lt;/script&gt;
&lt;!-- jQuery library --&gt;
&lt;script src=&quot;https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js&quot;&gt;&lt;/script&gt;
&lt;script src=&quot;https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js&quot;&gt;&lt;/script&gt;
&lt;script src=&quot;https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js&quot;&gt;&lt;/script&gt;

&lt;/html&gt;</code></pre>        </div>
    </div>