Update src/streamlit_app.py

src/streamlit_app.py

@@ -29,7 +29,7 @@ st.markdown("""
         padding: 0 10px 20px;      /* side & bottom padding */
         font-family: 'Helvetica Neue', Arial, sans-serif;
       }
-      .section-header {
+      .sectionheader {
           font-family: 'Source Sans Pro', sans-serif;
           font-size: 32px;
           color: #2c3e50;
@@ -51,7 +51,7 @@ These insights can help police departments, community organizations, and policym
 design targeted strategies to improve public safety.</div>""",unsafe_allow_html=True)
             
 # 2. Data info & load
-st.markdown("<div class='section-header'> Dataset Information</div>")
+st.markdown("<div class='sectionheader'> Dataset Information</div>")
 st.markdown(
     """
 - **Source:** LAPD crime incidents dataset  
@@ -78,12 +78,12 @@ if df.empty:
     st.stop()
     
 # 3. Data preview
-st.markdown("<div class='section-header'> Data Preview</div>")
+st.markdown("<div class='sectionheader'> Data Preview</div>")
 st.write(f"Total records: {df.shape[0]}  |  Total columns: {df.shape[1]}")
 st.dataframe(df.head())
 
 # Pie Chart 1: Top 10 Crime Types
-st.markdown("<div class='section-header'> Top 10 Crime Types by Year </div>")
+st.markdown("<div class='sectionheader'> Top 10 Crime Types by Year </div>")
 
 years = sorted(df["year"].dropna().astype(int).unique())
 # Prepend an “All” option