Update app.py

app.py

@@ -119,13 +119,13 @@ The original text, the original text and translation (a few lines of the origina
 
 When you press the download button, the compressed file will be downloaded, and if you select another translation language, the process will be repeated.:leftwards_arrow_with_hook:
 
-The uploaded PDF file data will disappear when you close the browser tab.:thought_balloon: :eyes:
+The uploaded PDF file data will disappear <u>when you close the browser tab.</u> :thought_balloon: :eyes:
 
 **Only PDF files can be uploaded.**
 
 This translation app is useful for people who want to translate something or want to read something but cannot read it unless it is translated, and who want to quickly check the original text and the translation by comparing them in pairs. :yin_yang:
 
-Even if the PDF file has many pages, there is no limit to the number of pages or characters.
+**Even if the PDF file has many pages, there is no limit to the number of pages or characters.**
 
 <u>The untranslated data will be retained until the browser is closed, but once the app page is closed, the connection will be cut off and the data will be deleted.</u>:broken_heart:
 """, unsafe_allow_html=True)