Test html rendering error

app.py

@@ -49,12 +49,10 @@ def main() -> None:
         replaced_text = html.escape(terms_and_conditions_text)
         for sentence in summary_sentences:
             sentence = html.escape(sentence)
-            replaced_text = replaced_text.replace(sentence,
-                                                  f"<div>"
-                                                  f"<span style='background-color: #FFFF00'>{sentence}</span>"
-                                                  f"</div>")
+            replaced_text = replaced_text.replace(sentence, f"<mark>{sentence}</mark>")
         replaced_text = replaced_text.replace('\n', '<br/>')
         with st.container():
+            st.write('<style>mark{background-color:yellow;}</style>', unsafe_allow_html=True)
             st.markdown(replaced_text, unsafe_allow_html=True)
 
     def is_valid_url(url: str) -> bool:
@@ -86,7 +84,6 @@ def main() -> None:
     if 'sample_choice' not in st.session_state:
         st.session_state['sample_choice'] = ''
 
-    st.write('<style>div.row-widget.stRadio > div{flex-direction:row;}</style>', unsafe_allow_html=True)
     st.header("Input")
 
     sentences_length = st.number_input(