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HTML

CSS

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', sans-serif;
    background: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    color: #333;
}

.todo-container {
    background-color: #fff;
    width: 400px;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
}

h1 {
    font-size: 28px;
    color: #333;
    margin-bottom: 20px;
    font-weight: 600;
}

input {
    width: 100%;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    margin-bottom: 15px;
    background-color: #f9f9f9;
    transition: background-color 0.3s ease;
}

input:focus {
    background-color: #fff;
    border-color: #4CAF50;
    outline: none;
}

button {
    width: 100%;
    padding: 15px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #45a049;
}

ul {
    list-style-type: none;
    margin-top: 20px;
    padding: 0;
}

li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #f9f9f9;
    margin: 10px 0;
    padding: 12px 20px;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s ease;
}

li:hover {
    background-color: #f1f1f1;
}

li.completed {
    background-color: #e4f9e4;
    text-decoration: line-through;
    color: #777;
}

li button {
    background-color: #ff4d4d;
    color: white;
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    font-size: 18px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    display: flex;
    justify-content: center;
    align-items: center;
}

li button:hover {
    background-color: #e60000;
}

li .complete-btn {
    background-color: #4CAF50;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 18px;
    color: white;
    margin-right: 10px;
}

li .complete-btn:hover {
    background-color: #45a049;
}

JS

document.getElementById('add-task-btn').addEventListener('click', addTask);

function addTask() {
    const taskInput = document.getElementById('new-task');
    const taskText = taskInput.value.trim();

if (taskText === '') return;

// Create a new task list item
    const li = document.createElement('li');

// Create the task text span
    const taskSpan = document.createElement('span');
    taskSpan.textContent = taskText;
    li.appendChild(taskSpan);

// Create a checkbox for marking task as complete
    const completeButton = document.createElement('button');
    completeButton.classList.add('complete-btn');
    completeButton.innerHTML = '✔';
    completeButton.addEventListener('click', function() {
        li.classList.toggle('completed');
    });
    li.appendChild(completeButton);

// Create a delete button for removing the task
    const deleteButton = document.createElement('button');
    deleteButton.innerHTML = '×';
    deleteButton.addEventListener('click', function() {
        li.remove();
    });
    li.appendChild(deleteButton);

// Append the task to the task list
    document.getElementById('task-list').appendChild(li);

// Clear input field after adding task
    taskInput.value = '';
}

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