Added custom CSS

app.py

@@ -87,7 +87,55 @@ def on_application_load():
         choices=leaderboard_server.submission_ids)
 
 
-with (gr.Blocks(theme=gr.themes.Soft(text_size=text_md), css="footer {visibility: hidden}") as main):
+custom_css = """
+
+footer {visibility: hidden}
+
+#leaderboard-table tr:first-child th {
+  background-color: var(--table-even-background-fill);
+}
+
+#leaderboard-table th:first-child, #leaderboard-table td:first-child {
+  position: sticky;
+  left: 0;
+  z-index: 1;
+  background-color: inherit;
+}
+
+#leaderboard-table th:nth-child(2), #leaderboard-table td:nth-child(2) {
+  position: sticky;
+  left: var(--cell-width-0);
+  z-index: 1;
+  background-color: inherit;
+}
+
+#leaderboard-table th:nth-child(3), #leaderboard-table td:nth-child(3) {
+  position: sticky;
+  left: calc(var(--cell-width-0) + var(--cell-width-1));
+  z-index: 1;
+  background-color: inherit;
+}
+
+#leaderboard-table th:nth-child(4), #leaderboard-table td:nth-child(4) {
+  position: sticky;
+  left: calc(var(--cell-width-0) + var(--cell-width-1) + var(--cell-width-2));
+  z-index: 1;
+  background-color: inherit;
+}
+
+#leaderboard-table th:nth-child(5), #leaderboard-table td:nth-child(5) {
+  position: sticky;
+  left: calc(var(--cell-width-0) + var(--cell-width-1) + var(--cell-width-2) + var(--cell-width-3));
+  z-index: 1;
+  background-color: inherit;
+  border-right-width: 2px;
+  border-right-color: var(--border-color-primary);
+}
+
+"""
+
+
+with (gr.Blocks(theme=gr.themes.Soft(text_size=text_md), css=custom_css) as main):
     with gr.Row():
         with gr.Row():
             gr.Markdown(HEADER_MARKDOWN)
@@ -96,7 +144,7 @@ with (gr.Blocks(theme=gr.themes.Soft(text_size=text_md), css="footer {visibility
         with gr.Tab('Leaderboard') as leaderboards_tab:
             gr.Markdown(LEADERBOARD_TAB_TITLE_MARKDOWN)
             results_table = gr.DataFrame(leaderboard_server.get_leaderboard(), interactive=False, label=None,
-                                         visible=True)
+                                         visible=True, elem_id="leaderboard-table")
 
             gr.Markdown(MORE_DETAILS_MARKDOWN)
             detail_dropdown = gr.Dropdown(choices=leaderboard_server.submission_ids, label="Select model",