Update app.py

app.py

@@ -1,58 +1,35 @@
 import streamlit as st 
 
-# Inspect the header element, go to the "Computed" tab in styles, and find its height.
-HEADER_HEIGHT = "60px"  # EXAMPLE: Adjust this (e.g., "56px", "4rem")
-HEADER_SELECTOR = 'header[data-testid="stHeader"]'
-
-# ---- SELECTOR FOR THE MAIN CONTENT AREA THAT NEEDS PADDING ----
-# Target the first direct div child of the stAppViewContainer which often holds the main scrollable content 
-MAIN_CONTENT_SELECTOR = 'section[data-testid="stMain"]'
-#MAIN_CONTENT_SELECTOR = 'section[data-testid="stMain"] > div:nth-child(1)'
-#MAIN_CONTENT_SELECTOR = 'section[data-testid="stMainBlockContainer"]'
-#MAIN_CONTENT_SELECTOR = 'section[data-testid="stAppViewContainer"]'
-#MAIN_CONTENT_SELECTOR = 'section[data-testid="stAppViewContainer"] > div:nth-child(1)'
-# Alternative if the above doesn't work or if your content is further nested:
-#MAIN_CONTENT_SELECTOR = 'section[data-testid="stAppViewContainer"] .main-content-wrapper-class'
-# Or, very commonly, Streamlit wraps main content in a div with class "block-container":
-#MAIN_CONTENT_SELECTOR = 'section[data-testid="stAppViewContainer"] .block-container'
-#MAIN_CONTENT_SELECTOR = '.main .block-container' # A more general selector for block-container
-
-custom_css = f"""
+# Custom CSS for sticky header
+st.markdown("""
 <style>
-    /* Making the Streamlit header sticky */
-    {HEADER_SELECTOR} {{
-        position: -webkit-sticky !important; /* For Safari */
-        position: sticky !important;
-        top: 0 !important;
-        z-index: 9999 !important; /* Very high z-index */
-        background-color: #90EE90 !important; /* Or your app's header background color */
-        /* Add a subtle shadow to make it feel more distinct when content scrolls under */
-        /* box-shadow: 0 2px 4px -1px rgba(0,0,0,0.1); */
-        /*.reportview-container .main .block-container{{ */
-        /*    padding-top: 0rem; */
-        /* }} */
-    }}
-
-    /* Adding padding to the main content area to prevent overlap with the sticky header */
-    {MAIN_CONTENT_SELECTOR} {{
-        padding-top: 10px !important; /* {HEADER_HEIGHT} !important; */
-        /* background-color: yellow !important; */
-        /* border-style: solid !important; */
-        /* border-color: red !important; */
-    }}
-
-    /* Optional: If your app is set to wide mode and the header isn't spanning full width */
-    /* This might be needed if the sticky positioning affects its width calculation. */
-    /*
-    #{HEADER_SELECTOR} {{
-    #    width: 100% !important;
-    #}}
-    #*/
+    .stApp header {
+        position: fixed;
+        top: 0;
+        z-index: 999;
+        background-color: white;
+        width: 100%;
+    }
+    
+    /* Add padding to the main content to prevent it from being hidden under the fixed header */
+    .main .block-container {
+        padding-top: 5rem;
+    }
+    
+    /* Additional CSS to ensure compatibility with Hugging Face iframe embedding */
+    .stApp {
+        overflow: auto;
+    }
+    
+    div[data-testid="stVerticalBlock"] {
+        padding-top: 1rem;
+    }
 </style>
-"""
+""", unsafe_allow_html=True)
 
-# Inject CSS as early as possible in your app
-st.markdown(custom_css, unsafe_allow_html=True)
+# Your app content
+st.title("My App with Sticky Header")
+# Rest of your app...
 
 # --- PAGE SETUP ---
 type_text_page = st.Page(