<html>

    <head>

        <meta charset="utf-8">

        <meta http-equiv="X-UA-Compatible" content="IE=edge">

        <meta name="viewport" content="width=device-width,initial-scale=1">



        <title>Create Your Item List</title>

        <meta name="description" content="Create your own item list by selecting items from the catalog.">

        <meta name="keywords" content="item list, catalog, select items">



        <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>

        <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet"

                integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">

        <link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">

        

        <script type="text/javascript">

            try {

                // App Javascript Goes Here. Place your entire script content inside the try block for error handling.

                

                // This will run when the DOM is ready.

                document.addEventListener("DOMContentLoaded", function() {

                    // Array to store selected items

                    var selectedItems = [];



                    // Function to handle item selection

                    function selectItem(item) {

                        if (!selectedItems.includes(item)) {

                            selectedItems.push(item);

                            $(item).addClass("selected");

                        } else {

                            var index = selectedItems.indexOf(item);

                            selectedItems.splice(index, 1);

                            $(item).removeClass("selected");

                        }

                    }



                    // Event listener for item selection

                    $(".catalog-item").on("click", function() {

                        selectItem(this);

                    });

                });



            } catch (error) {

                 // This will throw the error to the parent window.

                throw error;

            }

        </script>

        

        <style>

            /* App CSS Goes Here */

            body {

                font-family: 'Arial', sans-serif;

                background-color: #f8f9fa;

            }

            

            h1 {

                text-align: center;

                margin-top: 30px;

                color: #343a40;

                font-size: 24px;

            }

            

            .catalog-container {

                display: flex;

                flex-wrap: wrap;

                justify-content: center;

                gap: 20px;

                margin-top: 30px;

            }

            

            .catalog-item {

                display: flex;

                align-items: center;

                justify-content: center;

                width: 200px;

                height: 200px;

                background-color: #ffffff;

                border-radius: 10px;

                cursor: pointer;

                transition: transform 0.3s;

            }

            

            .catalog-item:hover {

                transform: scale(1.1);

            }

            

            .selected {

                background-color: #ffc107;

            }

            

            .selected .fa-check-circle {

                display: block;

                color: #ffffff;

                font-size: 48px;

            }

            

            .fa-check-circle {

                display: none;

            }

        </style>

    </head>

    <body>

        <div id="main-container" class="container">

            <h1>Create Your Item List</h1>

            

            <div class="catalog-container">

                <div class="catalog-item">

                    <i class="fa fa-check-circle"></i>

                </div>

                <div class="catalog-item">

                    <i class="fa fa-check-circle"></i>

                </div>

                <div class="catalog-item">

                    <i class="fa fa-check-circle"></i>

                </div>

                <div class="catalog-item">

                    <i class="fa fa-check-circle"></i>

                </div>

                <div class="catalog-item">

                    <i class="fa fa-check-circle"></i>

                </div>

                <div class="catalog-item">

                    <i class="fa fa-check-circle"></i>

                </div>

                <div class="catalog-item">

                    <i class="fa fa-check-circle"></i>

                </div>

                <div class="catalog-item">

                    <i class="fa fa-check-circle"></i>

                </div>

                <div class="catalog-item">

                    <i class="fa fa-check-circle"></i>

                </div>

                <div class="catalog-item">

                    <i class="fa fa-check-circle"></i>

                </div>

            </div>

        </div>

    </body>

</html>