Update app.py

app.py

@@ -6,41 +6,48 @@ header_container = st.container()
 # Create a separate container for the main content
 main_container = st.container()
 
-# Set up a custom CSS using st.markdown for the containers
+# Reset any previous custom styles
+st.set_page_config(page_title="My App", layout="wide")
+
+# Your app content starts here
+st.title("My App Title")
+
+# Create a custom header with container
+header = st.container()
+with header:
+    col1, col2 = st.columns([3, 1])
+    with col1:
+        st.subheader("Custom Sticky Navigation")
+    with col2:
+        st.button("Button 1")
+
+# Add minimal CSS that won't interfere with status toolbar
 st.markdown("""
 <style>
-    div[data-testid="stVerticalBlock"] > div:nth-child(1) {
+    /* Target only our specific header container */
+    [data-testid="stContainer"]:first-child {
+        position: -webkit-sticky;
         position: sticky;
-        top: 0;
-        background-color: white;
-        z-index: 999;
+        top: 0px;
+        background-color: #f0f5f5;
         padding: 1rem;
-        border-bottom: 1px solid #f0f0f0;
+        z-index: 50;
+        border-bottom: 1px solid #ddd;
     }
-    /* Adjust main content padding */
-    div[data-testid="stVerticalBlock"] > div:nth-child(2) {
-        padding-top: 1rem;
+    
+    /* Ensure this doesn't affect other containers */
+    [data-testid="stContainer"]:not(:first-child) {
+        margin-top: 1rem;
     }
-    /* Hide default Streamlit header if desired */
-    header {visibility: hidden;}
 </style>
 """, unsafe_allow_html=True)
 
-# Add content to the sticky header container
-with header_container:
-    st.title("My App with Sticky Header")
-    # Add any other header elements here
-    st.markdown("---")  # Optional divider
-
-# Add content to the main container
-with main_container:
-    # Your main app content goes here
-    st.write("Main content starts here")
-    
-    # Add some sample content to demonstrate scrolling
-    for i in range(20):
-        st.write(f"Content line {i}")
+# Main content area
+st.write("Main content starts here")
 
+# Add sample content to demonstrate scrolling
+for i in range(30):
+    st.write(f"Content line {i}")