Revert "Update theme-default style for accessible header-anchors"

This reverts commit 7b941cd1b0.

src/client/theme-default/styles/components/vp-doc.css

@@ -2,7 +2,12 @@
  * Headings
  * -------------------------------------------------------------------------- */
 
-.vp-doc .header-wrapper {
+.vp-doc h1,
+.vp-doc h2,
+.vp-doc h3,
+.vp-doc h4,
+.vp-doc h5,
+.vp-doc h6 {
   position: relative;
   font-weight: 600;
   outline: none;
@@ -31,8 +36,7 @@
 }
 
 .vp-doc .header-anchor {
-  position: absolute;
-  top: 0;
+  float: left;
   margin-left: -0.87em;
   padding-right: 0.23em;
   font-weight: 500;
@@ -41,40 +45,18 @@
   transition: color 0.25s, opacity 0.25s;
 }
 
-.vp-doc h1 + .header-anchor {
-  line-height: 40px;
-  font-size: 32px;
-}
-
-.vp-doc h2 + .header-anchor {
-  padding-top: 25px;
-  line-height: 32px;
-  font-size: 24px;
-}
-
-.vp-doc h3 + .header-anchor {
-  line-height: 28px;
-  font-size: 20px;
-}
-
-.vp-doc h1:hover + .header-anchor,
-.vp-doc h1 + .header-anchor:focus,
-.vp-doc h1 + .header-anchor:hover,
-.vp-doc h2:hover + .header-anchor,
-.vp-doc h2 + .header-anchor:focus,
-.vp-doc h2 + .header-anchor:hover,
-.vp-doc h3:hover + .header-anchor,
-.vp-doc h3 + .header-anchor:focus,
-.vp-doc h3 + .header-anchor:hover,
-.vp-doc h4:hover + .header-anchor,
-.vp-doc h4 + .header-anchor:focus,
-.vp-doc h4 + .header-anchor:hover,
-.vp-doc h5:hover + .header-anchor,
-.vp-doc h5 + .header-anchor:focus,
-.vp-doc h5 + .header-anchor:hover,
-.vp-doc h6:hover + .header-anchor,
-.vp-doc h6 + .header-anchor:focus,
-.vp-doc h6 + .header-anchor:hover {
+.vp-doc h1:hover .header-anchor,
+.vp-doc h1 .header-anchor:focus,
+.vp-doc h2:hover .header-anchor,
+.vp-doc h2 .header-anchor:focus,
+.vp-doc h3:hover .header-anchor,
+.vp-doc h3 .header-anchor:focus,
+.vp-doc h4:hover .header-anchor,
+.vp-doc h4 .header-anchor:focus,
+.vp-doc h5:hover .header-anchor,
+.vp-doc h5 .header-anchor:focus,
+.vp-doc h6:hover .header-anchor,
+.vp-doc h6 .header-anchor:focus {
   opacity: 1;
 }