How to make label in st.multiselect bigger/bolder

I am looking to make the label of multiselect bigger / bolder, my code looks like this :

choice_mode = st.multiselect("Chose Mode", ['A','B','C'], default="*")

I have tried adding this :

st.markdown(".stTextInput > label {font-size:105%; font-weight:bold; color:blue;} ",unsafe_allow_html=True) #for all text-input label sections

st.markdown(".stMultiSelect > label {font-size:105%; font-weight:bold; color:blue;} ",unsafe_allow_html=True) #for all multi-select label sections

from this page : https://discuss.streamlit.io/t/the-problem-changing-label-font-of-text-input-and-multi-select/23329

but all it does is display the text on my app like so :

Am I doing this wrong? Could it be the streamlit version?

Answer

You should wrap the css in <style>. You can write both css in one markdown instead of having to repeat yourself.
Note: It’s a good practice to keep your code properly formatted, that will save you headache in the long run, when you are looking to refacture the code.

st.markdown("""
    <style>
        .stTextInput > label {
            font-size:105%; 
            font-weight:bold; 
            color:blue;
        }
        .stMultiSelect > label {
            font-size:105%; 
            font-weight:bold; 
            color:blue;
        } 
    </style>
    """, unsafe_allow_html=True)