Update app.py

app.py

@@ -307,12 +307,12 @@ if submit and len(x) != 0:
   )
   
   with open(zipf, "rb") as f:
-  bytes = f.read()
-      b64 = base64.b64encode(bytes).decode()
-      href = f'<a href="data:file/zip;base64,{b64}" download=\'allcsvs.zip\'>\
-          Click to download\
-      </a>'
-  st.sidebar.markdown(href, unsafe_allow_html=True)
+    bytes = f.read()
+    b64 = base64.b64encode(bytes).decode()
+    href = f'<a href="data:file/zip;base64,{b64}" download=\'allcsvs.zip\'>\
+            Click to download\
+        </a>'
+    st.sidebar.markdown(href, unsafe_allow_html=True)