style.css

body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f7f7f7;
}

.container {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 300px;
    text-align: center;
}

.task-input {
    display: flex;
    margin-bottom: 20px;
}

#taskInput {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

#addTaskBtn {
    padding: 10px 20px;
    border: none;
    background-color: #28a745;
    color: white;
    cursor: pointer;
    margin-left: 10px;
    border-radius: 4px;
}

#addTaskBtn:hover {
    background-color: #218838;
}

#taskList {
    list-style-type: none;
    padding: 0;
}

.task-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-bottom: 10px;
}

.task-item.completed {
    text-decoration: line-through;
    color: #aaa;
}

.task-item button {
    border: none;
    background: none;
    cursor: pointer;
    color: #dc3545;
}

.task-item button:hover {
    color: #c82333;
}