unify layout between auth pages (#13547)

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

templates/user/auth/link_account.tmpl

@@ -1,21 +1,20 @@
 {{template "base/head" .}}
 
 <div class="user link-account">
-	<div class="ui middle very relaxed page grid">
-		<div class="column">
-
-			<div class="ui tabular menu">
+	<div class="ui secondary pointing tabular top attached borderless menu new-menu navbar">
 		<!-- TODO handle .ShowRegistrationButton once other login bugs are fixed -->
-				<div class="item {{if not .user_exists}}active{{end}}"
+		<a class="item {{if not .user_exists}}active{{end}}"
 			data-tab="auth-link-signup-tab">
 			{{.i18n.Tr "auth.oauth_signup_tab"}}
-				</div>
-				<div class="item {{if .user_exists}}active{{end}}"
+		</a>
+		<a class="item {{if .user_exists}}active{{end}}"
 			data-tab="auth-link-signin-tab">
 			{{.i18n.Tr "auth.oauth_signin_tab"}}
-				</div>
+		</a>
 	</div>
 
+	<div class="ui middle very relaxed page grid">
+		<div class="column">
 			<div class="ui tab {{if not .user_exists}}active{{end}}"
 				data-tab="auth-link-signup-tab">
 				{{template "user/auth/signup_inner" .}}

templates/user/auth/signin.tmpl

@@ -1,8 +1,10 @@
 {{template "base/head" .}}
 <div class="user signin{{if .LinkAccountMode}} icon{{end}}">
 	{{template "user/auth/signin_navbar" .}}
-	<div class="ui container">
+	<div class="ui middle very relaxed page grid">
+		<div class="ui container column">
 			{{template "user/auth/signin_inner" .}}
 		</div>
 	</div>
+</div>
 {{template "base/footer" .}}

templates/user/auth/signup.tmpl

@@ -1,3 +1,7 @@
 {{template "base/head" .}}
+<div class="user signin{{if .LinkAccountMode}} icon{{end}}">
+	<div class="ui middle very relaxed page grid">
 		{{template "user/auth/signup_inner" .}}
+	</div>
+</div>
 {{template "base/footer" .}}

templates/user/auth/signup_inner.tmpl

@@ -1,16 +1,14 @@
-<div class="user signup{{if .LinkAccountMode}} icon{{end}}">
-	<div class="ui middle very relaxed page grid">
-		<div class="column">
-			<form class="ui form" action="{{.SignUpLink}}" method="post">
-				{{.CsrfTokenHtml}}
-				<h3 class="ui top attached header">
+<div class="ui container column{{if .LinkAccountMode}} icon{{end}}">
+	<h4 class="ui top attached header center">
 		{{if .LinkAccountMode}}
 			{{.i18n.Tr "auth.oauth_signup_title"}}
 		{{else}}
 			{{.i18n.Tr "sign_up"}}
 		{{end}}
-				</h3>
+	</h4>
 	<div class="ui attached segment">
+		<form class="ui form" action="{{.SignUpLink}}" method="post">
+			{{.CsrfTokenHtml}}
 			{{if or (not .LinkAccountMode) (and .LinkAccountMode .LinkAccountModeRegister)}}
 			{{template "base/alert" .}}
 			{{end}}
@@ -75,8 +73,6 @@
 				</div>
 				{{end}}
 			{{end}}
-				</div>
 		</form>
 	</div>
 </div>
-</div>

web_src/less/_form.less

@@ -232,6 +232,7 @@ textarea:focus,
 .user.activate,
 .user.forgot.password,
 .user.reset.password,
+.user.link-account,
 .user.signin,
 .user.signup {
   @input-padding: 200px;

web_src/less/_home.less

@@ -49,10 +49,6 @@
   }
 }
 
-.signup {
-  padding-top: 15px;
-}
-
 footer {
   .ui.container .left,
   .ui.container .right {