body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: 50px auto;
    padding: 20px;
    background-color: #11a54f;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #333;
}

form {
    margin-bottom: 20px;
}

label {
    font-weight: bold;
    color: #333;
}

input[type="text"],
textarea,
select {
    width: calc(100% - 20px);
    margin-bottom: 10px;
    padding: 8px;
    box-sizing: border-box;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 16px;
}

button {
    padding: 10px 20px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: #0056b3;
}

ul {
    list-style-type: none;
    padding: 0;
}

li {
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 10px;
    margin-bottom: 10px;
    background-color: #f9f9f9;
}

.completed {
    text-decoration: line-through;
    color: #888;
}

.deleteBtn {
    background-color: #dc3545;
}

.deleteBtn:hover {
    background-color: #c82333;
}

.completeBtn {
    background-color: #28a745;
}

.completeBtn:hover {
    background-color: #218838;
}