.comment-form-captcha {
    margin-top: 15px;
    padding: 10px;
    background: #f7f7f7;
    border: 1px solid #ddd;
    border-radius: 6px;
}

.comment-form-captcha label {
    font-weight: bold;
    display: block;
    margin-bottom: 5px;
    color: #333;
}

.comment-form-captcha input[type="text"] {
    width: 100%;
    padding: 8px;
    border: 1px solid #bbb;
    border-radius: 4px;
    font-size: 14px;
}