app.py file update

src/app.py

-from Packages import *
-st.set_page_config(page_title="NIRS Utils", page_icon=":goat:", layout="wide",)
-# from Modules import *
-from mod import *
-# from utils.DATA_HANDLING import *
-from PIL import Image
-import base64
-background_img(change=None)
+# Load dependencies
+from common import *
+st.set_page_config(page_title="NIRS Utils", page_icon=":goat:", layout="wide")
 
+
+
+
+
+# page layout
+pages_folder = Path("pages/")
+BackgroundImg(change = None)
 add_header()
-# add_sidebar(pages_folder)
-# local_css(css_file / "style_app.css") # replace the md <style> code
+add_sidebar(pages_folder)
+local_css(css_file / "style_app.css") # replace the md <style> code
+
+
 
-# Page header
+
+# Page affiliation
 with st.container():
     st.subheader("Plateforme d'Analyses Chimiques pour l'Ecologie-PACE :goat:")
     st.markdown("""
@@ -19,23 +24,29 @@ with st.container():
         """, unsafe_allow_html=True)
 
 st.markdown('&nbsp;\n&nbsp;\n&nbsp;\n&nbsp;\n&nbsp;\n')
-mm1s, mmd2 = st.columns([2,2])
-image = Image.open("images/general.JPG")
-new_image = image.resize((700, 400))
-mmd2.image(new_image)
 
-mm1,mm, mm2=st.columns([2,1.5,2])
-with mm1:    
+# add graphical abstract
+c1, c2 = st.columns([2, 2])
+with c2:
+    image = Image.open("images/general.JPG")
+    new_image = image.resize((700, 400))
+    c2.image(new_image)
+
+
+# subpage info
+c3, c4, c5 = st.columns([2, 1.5, 2])
+with c3:    
     st.markdown('<h2 class="centered-text">About</h2>', unsafe_allow_html=True)
     st.markdown('<h3 class="centered-text"> NIRS Utils is a powerful tool that was developed to ease the spectral data processing process. It benifits from the synergy between web and data science frameworks to offer a user-friendly interface featured a variety of analytical capabilities. Further information can be found here.</h3>', unsafe_allow_html=True)
 
-with mm2:    
+with c5:    
     st.markdown('<h2 class="centered-text">Key Features</h2>', unsafe_allow_html=True)
     st.markdown('<h3 class="centered-text"> Our app featured a variety of analytical capabilities that makes it the optimal solution for spectral data processing : <br> - Easy-to-use. <br> - Use advanced frameworks. <br> - Enhanced automation capabilities. <br> - Saves your time and efforts.</h3>', unsafe_allow_html=True)
 
+# st.markdown('&nbsp;\n&nbsp;\n&nbsp;\n&nbsp;\n&nbsp;\n')
+    
 
-st.markdown('&nbsp;\n&nbsp;\n&nbsp;\n&nbsp;\n&nbsp;\n')
-
+# add buttons at the bottom of the page
 header1, header2, header3,header4 = st.columns(4)
 if header1.button("Inputs"):
     st.switch_page(pages_folder / '4-inputs.py')
@@ -44,4 +55,4 @@ if header2.button("Samples Selection"):
 if header3.button("Models Creation"):
     st.switch_page(pages_folder / '2-model_creation.py')
 if header4.button("Predictions"):
-    st.switch_page(pages_folder / '3-prediction.py')
+    st.switch_page(pages_folder / '3-prediction.py')
\ No newline at end of file