Add bogus portrait css

public/style.css

@@ -285,6 +285,24 @@ td:last-child {
   }
 }
 
+@media screen and (orientation: portrait) {
+  #container {
+    display: block;
+    overflow: auto;
+  }
+  #menu {
+  }
+  #content {
+    overflow: initial;
+    background-color: var(--toc-background);
+    color: var(--toc-foreground);
+  }
+  #table-of-contents {
+    display: none;
+  }
+}
+
+
 .Table__Entry__JSON > a {
   display: inline-block;
   width: 100%;