body {

    font-family: Arial, sans-serif;

    background-color: #f4f4f4;

    margin: 0;

    padding: 0;

}



.container {

    width: 100%;

    max-width: 600px;

    margin: 50px auto;

    padding: 20px;

    background: white;

    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);

    border-radius: 8px;

}



h1 {

    text-align: center;

    margin-bottom: 20px;

    color: #333;

}



#task-list {

    margin-bottom: 20px;

}



.task-item {

    padding: 10px;

    border-bottom: 1px solid #ddd;

    display: flex;

    justify-content: space-between;

    align-items: center;

}



.task-item.completed {

    text-decoration: line-through;

    color: #888;

}



.task-item button {

    background: none;

    border: none;

    color: red;

    cursor: pointer;

}



#task-name-input {

    width: calc(100% - 120px);

    padding: 10px;

    margin-right: 10px;

    border: 1px solid #ccc;

    border-radius: 4px;

}



#add-task-btn {

    padding: 10px;

    background-color: #28a745;

    color: white;

    border: none;

    border-radius: 4px;

    cursor: pointer;

}



#add-task-btn:hover {

    background-color: #218838;

}