Revert "Change design single"

This reverts commit e0d69d21.

config/_default/markup.toml

@@ -24,6 +24,6 @@ defaultMarkdownHandler = "goldmark"
   tabWidth = 4
 
 [tableOfContents]
-  endLevel = 0
+  endLevel = 3
   ordered = false
-  startLevel = 0
+  startLevel = 2

layouts/docs/single.html

@@ -24,7 +24,6 @@
 					</ol>
 				</nav>
 			{{ end }}
-			<span class="topic">Main topic</span>
 			<h1>{{ .Title }}</h1>
 			<p class="lead">{{ .Params.lead | safeHTML }}</p>
 			{{ if ne .Params.toc false -}}

layouts/partials/sidebar/auto-collapsible-menu.html

 <!-- Auto collapsible section menu -->
-<span class="topic">All topics</span>
 <ul class="list-unstyled collapsible-sidebar">
   {{ $currentPage := . -}}
   {{ $section := $currentPage.Section -}}

static/css/style.css

@@ -50,15 +50,6 @@
     width: 50px;
 }
 
-
-.topic {
-    padding-top: 10px;
-    font-weight: 700;
-    font-size: 1.5rem;
-}
-
-
-
 .logos img {
     height: 80px;
     margin: 10px 20px 10px 20px;