update mainpage fontsize

app.py

@@ -38,7 +38,7 @@ if not os.path.exists('dataset'):
   snapshot_download(repo_id=REPO_ID, token=token,repo_type='dataset',local_dir='dataset')
 
 HEADER = '''
-<h2><b>Official Gradio Demo</b></h2><h2><a href='https://huggingface.co/spaces/Serrelab/fossil_app' target='_blank'><b>Identifying Florissant Leaf Fossils to Family using Deep Neural Networks </b></a></h2>
+<h1><b>Official Gradio Demo</b></h2><h2><a href='https://huggingface.co/spaces/Serrelab/fossil_app' target='_blank'><b>Identifying Florissant Leaf Fossils to Family using Deep Neural Networks </b></a></h1>
 Code: <a href='https://github.com/orgs/serre-lab/projects/2' target='_blank'>GitHub</a>. Paper: <a href='' target='_blank'>ArXiv</a>.