fix scrolling bars and c++20 standard

Author: Tsche

.github/workflows/generate.yml

@@ -50,7 +50,7 @@ jobs:
         cp -r cppwp/n3337 build/c++11
         cp -r cppwp/n4140 build/c++14
         cp -r cppwp/n4659 build/c++17
-        cp -r cppwp/n4861 build/c++20
+        cp -r cppwp/n4868 build/c++20
         cp -r cppwp/n4950 build/c++23
 
     - name: Copy index

index.html

@@ -21,7 +21,7 @@
                 box-shadow: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);
                 max-width: calc(min(800px, 80vw));
                 max-height: 80vh;
-                overflow: scroll;
+                overflow: auto;
                 position: absolute;
                 top: 50%;
                 left: 50%;