.xieniao-duibi {
  justify-content: space-around;
  width: 100%;
  max-width: 1200px;
  margin: 20px auto;
}



.duibi {
    display: flex;margin: 0 auto;
    justify-content: space-around;
    width: 100%;
    max-width: 1200px;
    margin: 20px 0;
}

.textarea-duibi {
    flex: 1;
    text-align: center;
    margin: 0 10px;
}

textarea {
    width: 100%;
    height: 400px;
    padding: 10px;
    box-sizing: border-box;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: #fff;
}

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

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

.result-duibi {
    display: flex;
    justify-content: space-around;
    width: 100%;
    max-width: 1200px;
    margin-top: 5px;
}

.output-column {
    flex: 1;
    margin: 0 5px;
    border: 1px solid #ccc;
    border-radius: 5px;
    padding: 5px;
    white-space: pre-wrap;
    background-color: #fff;
    position: relative;
    padding-top: 5px;
}

.output-content {
    margin-top: 5px;
}

.copyButton {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: #28a745;
    color: #fff;
    border: none;
    border-radius: 5px;
    padding: 5px 20px;
    cursor: pointer;
}

.copyButton:hover {
    background-color: #218838;
}

.instructions {
    width: 100%;margin: 0 auto;
    max-width: 800px;
    margin-top: 20px;
    background-color: #fff;
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.instructions h2 {
    margin-bottom: 10px;
}

.instructions p {
    margin-bottom: 10px;
}

.instructions ol {
    margin-left: 20px;
}

.removed {
    background-color: #ffcccc;
}

.added {
    background-color: #ccffcc;
}

.stats {
    background-color: #f0f0f0;
    padding: 8px;
    margin-bottom: 10px;
    border-radius: 5px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 14px;
}

.stats span {
    margin-right: 10px;
}







.buttons-duibi {
    display: flex;
    justify-content: center;
    width: 100%;
    max-width: 1200px;
}