body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

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

.input-section {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

input {
    flex: 1;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

input[type="datetime-local"] {
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    padding: 8px 16px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

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

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

li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px;
    margin-bottom: 8px;
    background-color: #f9f9f9;
    border-radius: 4px;
}

li.completed {
    text-decoration: line-through;
    opacity: 0.7;
}

.task-time {
    font-size: 0.8em;
    color: #666;
    margin-left: 10px;
}

.delete-btn {
    background-color: #ff4444;
}

.delete-btn:hover {
    background-color: #cc0000;
}