Update app.py

app.py

@@ -4,7 +4,7 @@ from tf_coder.value_search import colab_interface, value_search_settings
 from streamlit_ace import st_ace
 st.set_page_config(page_title="TensorFlow Coder", page_icon='👩‍💻', layout="wide")
 
-st.write("<h2>TensorFlow Coder</h2>",unsafe_allow_html=True)
+st.write("<center><h2>TensorFlow Coder</h2></center>",unsafe_allow_html=True)
 st.write("[TensorFlow Coder](https://github.com/google-research/tensorflow-coder) is a program synthesis tool developed at Google Research by Kensen Shi, David Bieber and Rishabh Singh. It takes an example input-output tensor example and attempts to find the combination of TensorFlow ops that capture that transformation. Please cite the authors' [paper](https://github.com/google-research/tensorflow-coder/blob/master/README.md#citation) if you use their tool in your work. This demo is a work in progress.")
 
 col1, col2, col3 = st.columns([5, 5, 3])