add banner to blog

Isaac Ullah · Isaac Ullah · commit 7415bbfd7034 · 2023-04-26T13:10:32.000-07:00
diff --git a/blog/index.html b/blog/index.html
@@ -4,7 +4,7 @@
 excerpt: "A blog about computational archaeology..."
 header:
   overlay_image: /images/Simulation_Banner.png
-  overlay_filter: 0.5
+  overlay_filter: 0.75
 author_profile: true
 ---
 
