Add a 4th header

Author: ParaDoX1994

docs/.vuepress/styles/index.styl

@@ -40,6 +40,10 @@ tr
    &:nth-child(2n)
      background-color var(--sideBgColor)
 
+h4
+  font-size 1.10rem
+  padding-bottom .3rem
+
 
 
 .dropdown-wrapper .nav-dropdown
@@ -65,4 +69,4 @@ tr
   color: var(--accentColor) !important
 
 .search-box .suggestion.focused a
-  color: var(--navItemHoverColor) !important
+  color: var(--navItemHoverColor) !important