How's the Inline CSS is working with buttons?

Using Streamlit
1

I am creating a frontend part for my project and I do not know how’s the CSS will work with streamlit. Because I have to put this two button to align centered.
I did it below code, but it’s not optimal solutions. So I am to ask the community or our support engineers for answers to questions.

col1, col2, col3, col4, col5, col6, col7, col8, col9, col10, col11 = st.columns(11)
with col1:
    pass
with col2:
    pass
with col4:
    pass
with col5:
    pass
with col3:
    center_button = st.button('Next question')
with col6:
    pass
with col8:
    pass
with col9:
    pass
with col10:
    pass
with col11:
    pass
with col7:
    side_button = st.button('Submits')