Merge pull request #299 from lvuch/lh-theme-customization

header fix

docs/static/css/extra.css

@@ -20,10 +20,14 @@
     display: inline;
 }
 
+.md-header-nav__topic {
+    position: relative;
+}
+
 [data-md-color-primary=black] .md-tabs {
     background-color: #0DCEFF;
 }
 
 .md-tabs {
     color: black;
-}
+}