body {
    font-family: Arial, sans-serif;
    background-color: #f9f9f9;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;   
    width: 90%;
    margin-left: 5%;
}

.container {
    width: 80%;
    max-width: 800px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
    border-radius: 10px;
}

#word {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 10px;
}

#examples {
    margin-bottom: 20px;
    color: #555;
}

#word-bank {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

#word-bank div {
    padding: 10px 20px;
    background-color: #e0e0e0;
    border-radius: 25px;
    cursor: pointer;
}

#word-bank div.dragging {
    opacity: 0.5;
}

#word-type {
    font-style: italic;
    color: #888;
    margin-bottom: 10px;
}

#sentence {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

#sentence div {
    flex: 1;
    min-width: 120px;
    padding: 10px 20px;
    background-color: #e0e0e0;
    border: 2px dashed #ccc;
    border-radius: 5px;
    min-height: 40px;
	text-align: center;
}

#result {
    padding-top: 20px;
    font-size: 18px;
    margin-bottom: 20px;
    color: green;
}

button {
    padding: 10px 20px;
    background-color: #007BFF;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    margin-right: 10px;
}

button:hover {
    background-color: #0056b3;
}

button:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}
#learning-history-container {
   
    overflow-y: auto;
    margin-top: 20px;
    font-size: 14px;
}

#learning-history {
    width: 100%;
    border-collapse: collapse;
}

#learning-history th, #learning-history td {
    border: 1px solid #ccc;
    padding: 8px;
    text-align: center;
}

#learning-history th {
    background-color: #f4f4f4;
    font-weight: bold;
}