body {
    font-family: sans-serif;
    background-color: #f4f4f9;
    color: #333;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h1, h2, h3 {
    color: #0056b3;
}

h1 {
    text-align: center;
    margin-bottom: 20px;
}

#text-area {
    width: 100%;
    height: 300px;
    resize: vertical;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
    box-sizing: border-box;
    margin-bottom: 10px;
}

.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 10px;
}

button {
    padding: 10px 15px;
    border: none;
    background-color: #007bff;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.3s;
}

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

#clear-text {
    background-color: #dc3545;
}

#clear-text:hover {
    background-color: #c82333;
}

.content {
    margin-top: 40px;
    line-height: 1.6;
}

.content h2 {
    border-bottom: 2px solid #007bff;
    padding-bottom: 5px;
    margin-top: 30px;
}

dl {
    margin-left: 20px;
}

dd {
    margin-bottom: 15px;
}