Update app.py

app.py

@@ -14,13 +14,24 @@ from tkinter import Tcl
 # Flag to track if subprocess commands have been executed
 subprocess_executed = False
 
-# Streamlit app title
+# Title with superscript and subtitle
 st.markdown(
     """
     <style>
     .reportview-container {
-        background: url("https://img.freepik.com/premium-photo/plaque-buildup-blocked-vein-artery-generative-ai_851708-1459.jpg") no-repeat center center fixed;
-        background-size: cover;
+        background: white;
+    }
+    </style>
+    """,
+    unsafe_allow_html=True,
+)
+
+# Set a custom background color for the header
+st.markdown(
+    """
+    <style>
+    .reportview-container .main .block-container {
+        background: red;
     }
     </style>
     """,
@@ -28,8 +39,16 @@ st.markdown(
 )
 
 # Title with superscript and subtitle
-st.title("A<sup>4</sup>")
-st.markdown("Automated Aorta Segmentation and Measurement")
+st.markdown("""
+    <div style='text-align: center;'>
+        <h1 style='color: white;'>
+            A<sup>4</sup>
+        </h1>
+        <h3 style='color: white;'>
+            Automated Aorta Segmentation and Measurement
+        </h3>
+    </div>
+    """, unsafe_allow_html=True)
 
 # Upload a ZIP file containing DICOM slices
 uploaded_zip_file = st.file_uploader("Upload a ZIP file containing DICOM slices", type=["zip"])