fix home docs page button on mobile & tablet (#19646)

assets/sass/_base.sass

@@ -1052,6 +1052,9 @@ dd
   a.issue
     margin-left: 0px
 
+.gridPageHome .flyout-button
+  display: none
+
 .feedback--no
   margin-left: 1em
 

content/en/docs/home/_index.md

@@ -5,7 +5,7 @@ title: Kubernetes Documentation
 noedit: true
 cid: docsHome
 layout: docsportal_home
-class: gridPage
+class: gridPage gridPageHome
 linkTitle: "Home"
 main_menu: true
 weight: 10

layouts/partials/css.html

@@ -22,7 +22,7 @@
 {{- if .Params.deprecated }}
 <link rel="stylesheet" href="{{ "css/deprecation-warning.css" | relURL }}">
 {{- end }}
-{{- if eq .Params.class "gridPage" }}
+{{- if or (eq .Params.class "gridPage") (eq .Params.class "gridPage gridPageHome") }}
 <link rel="stylesheet" href="{{ "css/gridpage.css" | relURL }}">
 {{- end }}
 {{- if eq .Params.class "training" }}