<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>Todo List App</title>

        <meta name="description" content="A simple and intuitive todo list app to help you stay organized and manage your tasks efficiently.">

        <meta name="keywords" content="todo, list, tasks, organizer, productivity">



        <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() {

                    // Add task functionality

                    $("#add-task-btn").on("click", function() {

                        var task = $("#task-input").val();

                        if (task.trim() !== "") {

                            var taskItem = $("<li>").text(task);

                            var deleteBtn = $("<button>").addClass("delete-btn").html('<i class="fa fa-trash"></i>');

                            deleteBtn.on("click", function() {

                                $(this).parent().remove();

                            });

                            taskItem.append(deleteBtn);

                            $("#task-list").append(taskItem);

                            $("#task-input").val("");

                        }

                    });

                });



            } catch (error) {

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

                throw error;

            }

        </script>

        

        <style>

            /* App CSS Goes Here */

            body {

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

                background-color: #f5f5f5;

            }

            

            .container {

                max-width: 600px;

                margin: 0 auto;

                padding: 20px;

            }

            

            h1 {

                font-weight: bold;

                text-align: center;

                margin-bottom: 30px;

                color: #333333;

            }

            

            .todo-list {

                list-style-type: none;

                padding: 0;

            }

            

            .todo-list li {

                display: flex;

                align-items: center;

                justify-content: space-between;

                margin-bottom: 10px;

                background-color: #ffffff;

                padding: 10px;

                border-radius: 5px;

                box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.1);

            }

            

            .delete-btn {

                background-color: transparent;

                border: none;

                color: #ff4c4c;

                cursor: pointer;

                font-size: 18px;

            }

            

            .delete-btn:hover {

                color: #ff0000;

            }

            

            .input-group {

                margin-bottom: 20px;

            }

            

            .input-group input {

                width: 100%;

                padding: 10px;

                border-radius: 5px;

                border: 1px solid #dddddd;

                font-size: 16px;

            }

            

            .add-btn {

                background-color: #333333;

                color: #ffffff;

                border: none;

                padding: 10px 20px;

                border-radius: 5px;

                font-size: 16px;

                cursor: pointer;

            }

            

            .add-btn:hover {

                background-color: #222222;

            }

        </style>

    </head>

    <body>

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

            <h1>Todo List</h1>

            

            <div class="input-group">

                <input id="task-input" type="text" placeholder="Enter a task">

                <button id="add-task-btn" class="add-btn">Add Task</button>

            </div>

            

            <ul id="task-list" class="todo-list">

                <!-- Tasks will be dynamically added here -->

            </ul>

        </div>

    </body>

</html>