Change width to 704 it will cover complete width for that component

• Note: I have no experience with streamlit. but i have tested it & it works fine for some reason. Give it a try.

# Show Map
st_folium(
    folium.Map(
        location=[-20, 130], 
        zoom_start=4, 
        control_scale=True), 
    width=704, 
    height=400  )