body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f2f2f2;
}

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

.container h1 {
    margin-top: 0;
}

#task-form {
    display: flex;
    margin-bottom: 20px;
}

#task-input {
    flex-grow: 1;
    padding: 10px;
    border: 1px solid #ccc;
}

#add-task {
    padding: 10px;
    background-color: #4CAF50;
    color: #fff;
    border: none;
    cursor: pointer;
}

#tasks-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.task-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: #fff;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

.task-item.completed {
    background-color: #f2f2f2;
}

.delete-btn {
    padding: 5px;
    background-color: #f44336;
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
}

.delete-btn:hover {
    background-color: #da190b;
}