Update app.py

app.py

@@ -1,17 +1,44 @@
 import streamlit as st
 
 def main():
+    st.set_page_config(page_title="Popular Data Structures")
+    
+    st.markdown(
+        """
+        <style>
+            body {
+                background-color: #FFDEE9;
+                text-align: center;
+            }
+            .stButton>button {
+                background-color: #FF1493;
+                color: white;
+                font-size: 18px;
+                border-radius: 10px;
+                width: 300px;
+                height: 50px;
+                display: block;
+                margin: auto;
+            }
+            .stMarkdown {
+                text-align: center;
+            }
+        </style>
+        """,
+        unsafe_allow_html=True
+    )
+    
     st.title("Popular Data Structures")
     
     if st.button("What are the most popular data structures?"):
-        st.write("Here are some of the most popular data structures:")
-        st.write("- Arrays")
-        st.write("- Linked Lists")
-        st.write("- Stacks")
-        st.write("- Queues")
-        st.write("- Hash Tables")
-        st.write("- Trees (e.g., Binary Trees, BST, AVL Trees)")
-        st.write("- Graphs")
+        st.markdown("**Here are some of the most popular data structures:**")
+        st.markdown("- Arrays")
+        st.markdown("- Linked Lists")
+        st.markdown("- Stacks")
+        st.markdown("- Queues")
+        st.markdown("- Hash Tables")
+        st.markdown("- Trees (e.g., Binary Trees, BST, AVL Trees)")
+        st.markdown("- Graphs")
         
 if __name__ == "__main__":
     main()