body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f0f0f0;
}

.container {
    background: white;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

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

li {
    display: flex;
    justify-content: space-between;
    padding: 10px;
    border-bottom: 1px solid #ddd;
}

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

input[type="text"], input[type="date"] {
    margin: 5px 0;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 3px;
    width: calc(100% - 22px);
}

button {
    background: #007BFF;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 3px;
    cursor: pointer;
    margin-left: 5px;
}

button:hover {
    background: #0056b3;
}

.task-details {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.task-details span {
    margin: 2px 0;
    font-size: 0.9em;
    color: #555;
}