Add a colon after subreddit name.

app.py

@@ -21,7 +21,7 @@ def gen_show_caption(sub_prompt=None, cap_prompt=""):
                 remaining {{ color: black; font-size: 1.5rem }}
             </style>
 
-            - <red> r/{subreddit} </red> <blue> {cap_prompt} </blue><remaining> {caption} </remaining>
+            <red>r/{subreddit}</red>: <blue> {cap_prompt} </blue><remaining> {caption} </remaining>
             """,
             unsafe_allow_html=True,
         )
@@ -109,7 +109,7 @@ For more details, visit [redcaps.xyz](https://redcaps.xyz) check out
 our [NeurIPS 2021 paper](https://openreview.net/forum?id=VjJxBi1p9zh).
 """)
 
-_, center, _ = st.columns([1, 18, 1])
+_, center, _ = st.columns([1, 10, 1])
 
 with center:
     st.image(show_image)