body {
    font-family: Arial, sans-serif;
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    background-color: #f5f5f5;
}

.container {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

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

button {
    padding: 10px 20px;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background: #0056b3;
}

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

li {
    padding: 10px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: between;
    align-items: center;
}

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

.delete-btn {
    background: #dc3545;
    margin-left: auto;
}

.delete-btn:hover {
    background: #c82333;
}