fixed margin in lists and added show cards

exampleSite/config/_default/params.toml

@@ -7,7 +7,7 @@
 
 colorScheme = "blowfish"
 defaultAppearance = "dark" # valid options: light or dark
-autoSwitchAppearance = false
+autoSwitchAppearance = true
 
 enableSearch = true
 enableCodeCopy = true
@@ -53,6 +53,7 @@ mainSections = ["docs", "samples"]
   showBreadcrumbs = false
   showSummary = true
   showTableOfContents = false
+  showCards = true
   groupByYear = false
 
 [sitemap]