chore: various trivial fixes (#38070)

Follow-up to #37987, addressing the unresolved review comments on the
org members search form.

And fix more trivial problems together (see the commit titles)

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

templates/org/home.tmpl

@@ -9,6 +9,7 @@
 					<div id="readme_profile" class="render-content markup" data-profile-view-as-member="{{.IsViewingOrgAsMember}}">{{.ProfileReadmeContent}}</div>
 				{{end}}
 				{{template "shared/repo/search" .}}
+				<div class="divider"></div>
 				{{if not .Repos}}
 					<div class="empty-placeholder">
 						{{svg "octicon-repo" 48}}

templates/org/member/members.tmpl

@@ -9,16 +9,13 @@
 				<div class="tw-flex-1">{{ctx.Locale.Tr "org.teams.manage_team_member_prompt"}}</div>
 				<a class="ui primary button" href="./teams">{{ctx.Locale.Tr "org.teams.manage_team_member"}}</a>
 			</div>
-			<div class="divider"></div>
 		{{end}}
-		<div class="ui small secondary filter">
-			<form id="org-member-search-form" class="ui form ignore-dirty tw-flex-1 tw-flex tw-items-center">
-				<div class="ui small fluid action input tw-flex-1">
-					{{template "shared/search/input" dict "Value" .Keyword "Placeholder" (ctx.Locale.Tr "search.user_kind")}}
-					{{template "shared/search/button"}}
-				</div>
-			</form>
-		</div>
+		<form class="ui form ignore-dirty tw-my-4">
+			<div class="ui small fluid action input">
+				{{template "shared/search/input" dict "Value" .Keyword "Placeholder" (ctx.Locale.Tr "search.user_kind")}}
+				{{template "shared/search/button"}}
+			</div>
+		</form>
 		<div class="flex-divided-list items-with-main">
 			{{range .Members}}
 				{{$isPublic := index $.MembersIsPublicMember .ID}}