fix: fix css max-width query

Author: rdmsr

Diff for: example/static/style.css

@@ -182,7 +182,7 @@ div.sidebar a {
     border-radius: 2px;
 }
 
-@media (max-width: 768px) {
+@media (max-width: 1024px) {
     div.sidebar {
         float: none;
         width: 100%;
@@ -224,4 +224,4 @@ div.sidebar a {
     .item-table .item-desc * {
         margin-left: 20px;
     }
-}
+}