Fix navbar hiding showcase on anchor link

Author: hecrj

sass/main.sass

@@ -22,6 +22,7 @@ nav details[class=dropdown] summary:not(:hover,:focus,:focus-visible), nav detai
     justify-content: center
 
 #showcase
+  scroll-margin-top: 150px
   margin-top: calc(var(--pico-block-spacing-vertical) * 4)
 
 #showcase-items