📚 DOCS: fix tip CSS (#708)

Minor fix to stop the hover tips getting heading numbers

Author: chrisjsewell

docs/_static/local.css

@@ -1,19 +1,25 @@
 /** Add a counter before subsections **/
-h1:not(.tippy-header) {
+h1 {
     counter-reset: subsection;
     text-decoration: underline;
 }
-h2:not(.tippy-header) {
+h2 {
     counter-reset: subsubsection;
 }
-h2:not(.tippy-header)::before {
+h2::before {
     counter-increment: subsection;
     content: counter(subsection) ". ";
 }
-h3:not(.tippy-header)::before {
+.tippy-box h2::before {
+    content: unset;
+}
+h3::before {
     counter-increment: subsubsection;
     content: counter(subsection) "." counter(subsubsection) ". ";
 }
+.tippy-box h3::before {
+    content: unset;
+}
 
 /** MyST examples */
 .myst-example {