Style.css was updated

Author: Altai-man

html/css/style.css

@@ -419,3 +419,17 @@ div.highlight span.c-Singleline, div.highlight span.c {
     padding: 8px 0; }
   table#TOC tr.toc-level-1 td {
     padding-top: 18px; } }
+
+/* hide TOC */
+.hiddenTOC {
+  font-size: 0;
+  margin: 0;
+  opacity: 0;
+  padding: 0;
+  /* fade out, then shrink */
+  transition: opacity .25s, font-size .5s .25s, margin .5s .25s, padding .5s .25s; }
+
+/* reveal TOC */
+.shownTOC {
+  /* unshrink, then fade in */
+  transition: font-size .25s, margin .25s, padding .25s, opacity .5s .25s; }