I want to know how to style app made by streamlit

[knox]

i want remove empty space that i marked by pink color

st.title('Stock X')
st.sidebar.info('Welcome to the Stock Price Prediction App. Choose your Stocks below')


def main():
    option = st.sidebar.selectbox('Make a choice', ['Visualize'])
    
    if option == 'Visualize':
        tech_indicators()


@st.cache_resource
def download_df(op, start_date, end_date):
    df = yf.download(op, start=start_date, end=end_date, progress=False)
    return df



Stock = st.sidebar.text_input('Enter a Stock Symbol', value='MSFT')
Stock = Stock.upper()
today = datetime.date.today()
duration = st.sidebar.number_input('Enter the duration', value=1500)
before = today - datetime.timedelta(days=duration)
start_date = st.sidebar.date_input('Start Date', value=before)
end_date = st.sidebar.date_input('End date', today)
if st.sidebar.button('Send'):
    if start_date < end_date:
        st.sidebar.success('Start date: `%s`\n\nEnd date: `%s`' %(start_date, end_date))
        download_df(Stock, start_date, end_date)
    else:
        st.sidebar.error('Error: End date must fall after start date')



df = download_df(Stock, start_date, end_date)


def tech_indicators():
    st.header('Technical Indicators')
    Stock = st.radio('Choose a Technical Indicator to Visualize', ['Chart', 'BB', 'SMA', 'EMA'])
    Viz = df.copy()
    # Bollinger bands
    

    if Stock == 'Chart':
        st.write('Candlestick chart')
        chart = StreamlitChart(width=900, height=600)
        chart.set(Viz)
        chart.load()
        st.markdown("<style>.css-18e3th9 { padding-top: 0rem; } </style>", unsafe_allow_html=True)  # Adjust padding as needed
    elif Stock == 'BB':
        st.write('BollingerBands')
        


    elif Stock == 'SMA':
        st.write('Simple Moving Average')
       
    else:
        st.write('Expoenetial Moving Average')

if __name__ == '__main__':
    main()

[edsaac]

You can set up a wide layout using st.set_page_config.

st.set_page_config - Streamlit Docs

[knox]

@edsaac thanks it worked