Migrate `gt-hidden` to `tw-hidden` (#30046)

We have to define this one in helpers.css because tailwind only
generates a single class but certain things rely on this being
double-class. Command ran:

```sh
perl -p -i -e 's#gt-hidden#tw-hidden#g' web_src/js/**/* templates/**/* models/**/* web_src/css/**/*

---------

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

18 files changed, 47 insertions, 47 deletions

diff --git a/templates/repo/issue/branch_selector_field.tmpl b/templates/repo/issue/branch_selector_field.tmpl
index f182b909d6..b8ac9a6194 100644
--- a/templates/repo/issue/branch_selector_field.tmpl
+++ b/templates/repo/issue/branch_selector_field.tmpl
@@ -42,7 +42,7 @@
 				<div class="item">{{ctx.Locale.Tr "no_results_found"}}</div>
 			{{end}}
 		</div>
-		<div id="tag-list" class="scrolling menu reference-list-menu {{if not .Issue}}new-issue{{end}} gt-hidden">
+		<div id="tag-list" class="scrolling menu reference-list-menu {{if not .Issue}}new-issue{{end}} tw-hidden">
 			{{if .Reference}}
 				<div class="item text small" data-id="" data-id-selector="#ref_selector"><strong><a href="#">{{ctx.Locale.Tr "repo.clear_ref"}}</a></strong></div>
 			{{end}}
diff --git a/templates/repo/issue/fields/checkboxes.tmpl b/templates/repo/issue/fields/checkboxes.tmpl
index 5d98605983..531f401fb7 100644
--- a/templates/repo/issue/fields/checkboxes.tmpl
+++ b/templates/repo/issue/fields/checkboxes.tmpl
@@ -1,8 +1,8 @@
-<div class="field {{if not .item.VisibleOnForm}}gt-hidden{{end}}">
+<div class="field {{if not .item.VisibleOnForm}}tw-hidden{{end}}">
 	{{template "repo/issue/fields/header" .}}
 	{{range $i, $opt := .item.Attributes.options}}
 		<div class="field inline">
-			<div class="ui checkbox tw-mr-0 {{if and ($opt.visible) (not (SliceUtils.Contains $opt.visible "form"))}}gt-hidden{{end}}">
+			<div class="ui checkbox tw-mr-0 {{if and ($opt.visible) (not (SliceUtils.Contains $opt.visible "form"))}}tw-hidden{{end}}">
 				<input type="checkbox" name="form-field-{{$.item.ID}}-{{$i}}" {{if $opt.required}}required{{end}}>
 				<label>{{RenderMarkdownToHtml $.context $opt.label}}</label>
 			</div>
diff --git a/templates/repo/issue/fields/dropdown.tmpl b/templates/repo/issue/fields/dropdown.tmpl
index b8df6908e3..f4fa79738c 100644
--- a/templates/repo/issue/fields/dropdown.tmpl
+++ b/templates/repo/issue/fields/dropdown.tmpl
@@ -1,4 +1,4 @@
-<div class="field {{if not .item.VisibleOnForm}}gt-hidden{{end}}">
+<div class="field {{if not .item.VisibleOnForm}}tw-hidden{{end}}">
 	{{template "repo/issue/fields/header" .}}
 	{{/* FIXME: required validation */}}
 	<div class="ui fluid selection dropdown {{if .item.Attributes.multiple}}multiple clearable{{end}}">
diff --git a/templates/repo/issue/fields/input.tmpl b/templates/repo/issue/fields/input.tmpl
index ad0fe3d783..039f9a9f34 100644
--- a/templates/repo/issue/fields/input.tmpl
+++ b/templates/repo/issue/fields/input.tmpl
@@ -1,4 +1,4 @@
-<div class="field {{if not .item.VisibleOnForm}}gt-hidden{{end}}">
+<div class="field {{if not .item.VisibleOnForm}}tw-hidden{{end}}">
 	{{template "repo/issue/fields/header" .}}
 	<input type="{{if .item.Validations.is_number}}number{{else}}text{{end}}" name="form-field-{{.item.ID}}" placeholder="{{.item.Attributes.placeholder}}" value="{{.item.Attributes.value}}" {{if .item.Validations.required}}required{{end}} {{if .item.Validations.regex}}pattern="{{.item.Validations.regex}}" title="{{.item.Validations.regex}}"{{end}}>
 </div>
diff --git a/templates/repo/issue/fields/markdown.tmpl b/templates/repo/issue/fields/markdown.tmpl
index 97813cc1d8..934699ed05 100644
--- a/templates/repo/issue/fields/markdown.tmpl
+++ b/templates/repo/issue/fields/markdown.tmpl
@@ -1,3 +1,3 @@
-<div class="field {{if not .item.VisibleOnForm}}gt-hidden{{end}}">
+<div class="field {{if not .item.VisibleOnForm}}tw-hidden{{end}}">
 	<div>{{RenderMarkdownToHtml .Context .item.Attributes.value}}</div>
 </div>
diff --git a/templates/repo/issue/fields/textarea.tmpl b/templates/repo/issue/fields/textarea.tmpl
index 831cea01d5..3ad69e1220 100644
--- a/templates/repo/issue/fields/textarea.tmpl
+++ b/templates/repo/issue/fields/textarea.tmpl
@@ -1,5 +1,5 @@
 {{$useMarkdownEditor := not .item.Attributes.render}}
-<div class="field {{if not .item.VisibleOnForm}}gt-hidden{{end}} {{if $useMarkdownEditor}}combo-editor-dropzone{{end}}">
+<div class="field {{if not .item.VisibleOnForm}}tw-hidden{{end}} {{if $useMarkdownEditor}}combo-editor-dropzone{{end}}">
 	{{template "repo/issue/fields/header" .}}
 
 	{{/* the real form element to provide the value */}}
@@ -7,7 +7,7 @@
 
 	{{if $useMarkdownEditor}}
 		{{template "shared/combomarkdowneditor" (dict
-			"ContainerClasses" "gt-hidden"
+			"ContainerClasses" "tw-hidden"
 			"MarkdownPreviewUrl" (print .root.RepoLink "/markup")
 			"MarkdownPreviewContext" .root.RepoLink
 			"TextareaContent" .item.Attributes.value
@@ -16,7 +16,7 @@
 		)}}
 
 		{{if .root.IsAttachmentEnabled}}
-		<div class="tw-mt-4 form-field-dropzone gt-hidden">
+		<div class="tw-mt-4 form-field-dropzone tw-hidden">
 			{{template "repo/upload" .root}}
 		</div>
 		{{end}}
diff --git a/templates/repo/issue/labels/edit_delete_label.tmpl b/templates/repo/issue/labels/edit_delete_label.tmpl
index 526bc760a2..98e0f47020 100644
--- a/templates/repo/issue/labels/edit_delete_label.tmpl
+++ b/templates/repo/issue/labels/edit_delete_label.tmpl
@@ -30,7 +30,7 @@
 				</div>
 				<br>
 				<small class="desc">{{ctx.Locale.Tr "repo.issues.label_exclusive_desc"}}</small>
-				<div class="desc tw-ml-1 tw-mt-2 gt-hidden label-exclusive-warning">
+				<div class="desc tw-ml-1 tw-mt-2 tw-hidden label-exclusive-warning">
 					{{svg "octicon-alert"}} {{ctx.Locale.Tr "repo.issues.label_exclusive_warning"}}
 				</div>
 				<br>
diff --git a/templates/repo/issue/labels/label.tmpl b/templates/repo/issue/labels/label.tmpl
index d20d5e63d7..3651ba118f 100644
--- a/templates/repo/issue/labels/label.tmpl
+++ b/templates/repo/issue/labels/label.tmpl
@@ -1,5 +1,5 @@
 <a
-	class="item {{if not .label.IsChecked}}gt-hidden{{end}}"
+	class="item {{if not .label.IsChecked}}tw-hidden{{end}}"
 	id="label_{{.label.ID}}"
 	href="{{.root.RepoLink}}/{{if or .root.IsPull .root.Issue.IsPull}}pulls{{else}}issues{{end}}?labels={{.label.ID}}"{{/* FIXME: use .root.Issue.Link or create .root.Link */}}
 >
diff --git a/templates/repo/issue/labels/labels_sidebar.tmpl b/templates/repo/issue/labels/labels_sidebar.tmpl
index 4f41054a91..be30baba92 100644
--- a/templates/repo/issue/labels/labels_sidebar.tmpl
+++ b/templates/repo/issue/labels/labels_sidebar.tmpl
@@ -1,5 +1,5 @@
 <div class="ui labels list">
-	<span class="no-select item {{if .root.HasSelectedLabel}}gt-hidden{{end}}">{{ctx.Locale.Tr "repo.issues.new.no_label"}}</span>
+	<span class="no-select item {{if .root.HasSelectedLabel}}tw-hidden{{end}}">{{ctx.Locale.Tr "repo.issues.new.no_label"}}</span>
 	<span class="labels-list">
 		{{range .root.Labels}}
 			{{template "repo/issue/labels/label" dict "root" $.root "label" .}}
diff --git a/templates/repo/issue/list.tmpl b/templates/repo/issue/list.tmpl
index 45bddefa42..30edf825f1 100644
--- a/templates/repo/issue/list.tmpl
+++ b/templates/repo/issue/list.tmpl
@@ -32,7 +32,7 @@
 
 		{{template "repo/issue/filters" .}}
 
-		<div id="issue-actions" class="issue-list-toolbar gt-hidden">
+		<div id="issue-actions" class="issue-list-toolbar tw-hidden">
 			<div class="issue-list-toolbar-left">
 				{{template "repo/issue/openclose" .}}
 				<!-- Total Tracked Time -->
diff --git a/templates/repo/issue/new_form.tmpl b/templates/repo/issue/new_form.tmpl
index 7c73bd182b..058ea8d73e 100644
--- a/templates/repo/issue/new_form.tmpl
+++ b/templates/repo/issue/new_form.tmpl
@@ -68,7 +68,7 @@
 			</div>
 		</div>
 		<div class="ui select-milestone list">
-			<span class="no-select item {{if .Milestone}}gt-hidden{{end}}">{{ctx.Locale.Tr "repo.issues.new.no_milestone"}}</span>
+			<span class="no-select item {{if .Milestone}}tw-hidden{{end}}">{{ctx.Locale.Tr "repo.issues.new.no_milestone"}}</span>
 			<div class="selected">
 				{{if .Milestone}}
 					<a class="item muted sidebar-item-link" href="{{.RepoLink}}/issues?milestone={{.Milestone.ID}}">
@@ -129,7 +129,7 @@
 			</div>
 		</div>
 		<div class="ui select-project list">
-			<span class="no-select item {{if .Project}}gt-hidden{{end}}">{{ctx.Locale.Tr "repo.issues.new.no_projects"}}</span>
+			<span class="no-select item {{if .Project}}tw-hidden{{end}}">{{ctx.Locale.Tr "repo.issues.new.no_projects"}}</span>
 			<div class="selected">
 				{{if .Project}}
 					<a class="item muted sidebar-item-link" href="{{.Project.Link ctx}}">
@@ -165,12 +165,12 @@
 				</div>
 			</div>
 			<div class="ui assignees list">
-				<span class="no-select item {{if .HasSelectedLabel}}gt-hidden{{end}}">
+				<span class="no-select item {{if .HasSelectedLabel}}tw-hidden{{end}}">
 					{{ctx.Locale.Tr "repo.issues.new.no_assignees"}}
 				</span>
 				<div class="selected">
 				{{range .Assignees}}
-					<a class="item tw-p-1 muted gt-hidden" id="assignee_{{.ID}}" href="{{$.RepoLink}}/issues?assignee={{.ID}}">
+					<a class="item tw-p-1 muted tw-hidden" id="assignee_{{.ID}}" href="{{$.RepoLink}}/issues?assignee={{.ID}}">
 						{{ctx.AvatarUtils.Avatar . 28 "tw-mr-2 tw-align-middle"}}{{.GetDisplayName}}
 					</a>
 				{{end}}
diff --git a/templates/repo/issue/search.tmpl b/templates/repo/issue/search.tmpl
index 4727b26154..769387b51c 100644
--- a/templates/repo/issue/search.tmpl
+++ b/templates/repo/issue/search.tmpl
@@ -11,7 +11,7 @@
 		{{end}}
 		{{template "shared/search/input" dict "Value" .Keyword}}
 		{{if .PageIsIssueList}}
-			<button id="issue-list-quick-goto" class="ui small icon button gt-hidden" data-tooltip-content="{{ctx.Locale.Tr "explore.go_to"}}" data-repo-link="{{.RepoLink}}">{{svg "octicon-hash"}}</button>
+			<button id="issue-list-quick-goto" class="ui small icon button tw-hidden" data-tooltip-content="{{ctx.Locale.Tr "explore.go_to"}}" data-repo-link="{{.RepoLink}}">{{svg "octicon-hash"}}</button>
 		{{end}}
 		{{template "shared/search/button"}}
 	</div>
diff --git a/templates/repo/issue/view_content.tmpl b/templates/repo/issue/view_content.tmpl
index 759de75662..c65b79dea7 100644
--- a/templates/repo/issue/view_content.tmpl
+++ b/templates/repo/issue/view_content.tmpl
@@ -59,8 +59,8 @@
 								<span class="no-content">{{ctx.Locale.Tr "repo.issues.no_content"}}</span>
 							{{end}}
 						</div>
-						<div id="issue-{{.Issue.ID}}-raw" class="raw-content gt-hidden">{{.Issue.Content}}</div>
-						<div class="edit-content-zone gt-hidden" data-update-url="{{$.RepoLink}}/issues/{{.Issue.Index}}/content" data-context="{{.RepoLink}}" data-attachment-url="{{$.RepoLink}}/issues/{{.Issue.Index}}/attachments" data-view-attachment-url="{{$.RepoLink}}/issues/{{.Issue.Index}}/view-attachments"></div>
+						<div id="issue-{{.Issue.ID}}-raw" class="raw-content tw-hidden">{{.Issue.Content}}</div>
+						<div class="edit-content-zone tw-hidden" data-update-url="{{$.RepoLink}}/issues/{{.Issue.Index}}/content" data-context="{{.RepoLink}}" data-attachment-url="{{$.RepoLink}}/issues/{{.Issue.Index}}/attachments" data-view-attachment-url="{{$.RepoLink}}/issues/{{.Issue.Index}}/view-attachments"></div>
 						{{if .Issue.Attachments}}
 							{{template "repo/issue/view_content/attachments" dict "Attachments" .Issue.Attachments "RenderedContent" .Issue.RenderedContent}}
 						{{end}}
@@ -172,7 +172,7 @@
 {{template "repo/issue/view_content/reference_issue_dialog" .}}
 {{template "shared/user/block_user_dialog" .}}
 
-<div class="gt-hidden" id="no-content">
+<div class="tw-hidden" id="no-content">
 	<span class="no-content">{{ctx.Locale.Tr "repo.issues.no_content"}}</span>
 </div>
 
diff --git a/templates/repo/issue/view_content/comments.tmpl b/templates/repo/issue/view_content/comments.tmpl
index dbfe016e89..f65dc6ee90 100644
--- a/templates/repo/issue/view_content/comments.tmpl
+++ b/templates/repo/issue/view_content/comments.tmpl
@@ -66,8 +66,8 @@
 								<span class="no-content">{{ctx.Locale.Tr "repo.issues.no_content"}}</span>
 							{{end}}
 						</div>
-						<div id="issuecomment-{{.ID}}-raw" class="raw-content gt-hidden">{{.Content}}</div>
-						<div class="edit-content-zone gt-hidden" data-update-url="{{$.RepoLink}}/comments/{{.ID}}" data-context="{{$.RepoLink}}" data-attachment-url="{{$.RepoLink}}/comments/{{.ID}}/attachments"></div>
+						<div id="issuecomment-{{.ID}}-raw" class="raw-content tw-hidden">{{.Content}}</div>
+						<div class="edit-content-zone tw-hidden" data-update-url="{{$.RepoLink}}/comments/{{.ID}}" data-context="{{$.RepoLink}}" data-attachment-url="{{$.RepoLink}}/comments/{{.ID}}/attachments"></div>
 						{{if .Attachments}}
 							{{template "repo/issue/view_content/attachments" dict "Attachments" .Attachments "RenderedContent" .RenderedContent}}
 						{{end}}
@@ -440,8 +440,8 @@
 									<span class="no-content">{{ctx.Locale.Tr "repo.issues.no_content"}}</span>
 								{{end}}
 							</div>
-							<div id="issuecomment-{{.ID}}-raw" class="raw-content gt-hidden">{{.Content}}</div>
-							<div class="edit-content-zone gt-hidden" data-update-url="{{$.RepoLink}}/comments/{{.ID}}" data-context="{{$.RepoLink}}" data-attachment-url="{{$.RepoLink}}/comments/{{.ID}}/attachments"></div>
+							<div id="issuecomment-{{.ID}}-raw" class="raw-content tw-hidden">{{.Content}}</div>
+							<div class="edit-content-zone tw-hidden" data-update-url="{{$.RepoLink}}/comments/{{.ID}}" data-context="{{$.RepoLink}}" data-attachment-url="{{$.RepoLink}}/comments/{{.ID}}/attachments"></div>
 							{{if .Attachments}}
 								{{template "repo/issue/view_content/attachments" dict "Attachments" .Attachments "RenderedContent" .RenderedContent}}
 							{{end}}
diff --git a/templates/repo/issue/view_content/conversation.tmpl b/templates/repo/issue/view_content/conversation.tmpl
index 1a282968d7..79e7cb498b 100644
--- a/templates/repo/issue/view_content/conversation.tmpl
+++ b/templates/repo/issue/view_content/conversation.tmpl
@@ -17,7 +17,7 @@
 			</div>
 			<div>
 				{{if or $invalid $resolved}}
-					<button id="show-outdated-{{$comment.ID}}" data-comment="{{$comment.ID}}" class="{{if not $resolved}}gt-hidden {{end}}ui compact labeled button show-outdated tw-flex tw-items-center">
+					<button id="show-outdated-{{$comment.ID}}" data-comment="{{$comment.ID}}" class="{{if not $resolved}}tw-hidden {{end}}ui compact labeled button show-outdated tw-flex tw-items-center">
 						{{svg "octicon-unfold" 16 "tw-mr-2"}}
 						{{if $resolved}}
 							{{ctx.Locale.Tr "repo.issues.review.show_resolved"}}
@@ -25,7 +25,7 @@
 							{{ctx.Locale.Tr "repo.issues.review.show_outdated"}}
 						{{end}}
 					</button>
-					<button id="hide-outdated-{{$comment.ID}}" data-comment="{{$comment.ID}}" class="{{if $resolved}}gt-hidden {{end}}ui compact labeled button hide-outdated tw-flex tw-items-center">
+					<button id="hide-outdated-{{$comment.ID}}" data-comment="{{$comment.ID}}" class="{{if $resolved}}tw-hidden {{end}}ui compact labeled button hide-outdated tw-flex tw-items-center">
 						{{svg "octicon-fold" 16 "tw-mr-2"}}
 						{{if $resolved}}
 							{{ctx.Locale.Tr "repo.issues.review.hide_resolved"}}
@@ -39,7 +39,7 @@
 		{{$diff := (CommentMustAsDiff ctx $comment)}}
 		{{if $diff}}
 			{{$file := (index $diff.Files 0)}}
-			<div id="code-preview-{{$comment.ID}}" class="ui table segment{{if $resolved}} gt-hidden{{end}}">
+			<div id="code-preview-{{$comment.ID}}" class="ui table segment{{if $resolved}} tw-hidden{{end}}">
 				<div class="diff-file-box diff-box file-content {{TabSizeClass $.Editorconfig $file.Name}}">
 					<div class="file-body file-code code-view code-diff code-diff-unified unicode-escaped">
 						<table>
@@ -51,7 +51,7 @@
 				</div>
 			</div>
 		{{end}}
-		<div id="code-comments-{{$comment.ID}}" class="comment-code-cloud ui segment{{if $resolved}} gt-hidden{{end}}">
+		<div id="code-comments-{{$comment.ID}}" class="comment-code-cloud ui segment{{if $resolved}} tw-hidden{{end}}">
 			<div class="ui comments tw-mb-0">
 				{{range .comments}}
 					{{$createdSubStr:= TimeSinceUnix .CreatedUnix ctx.Locale}}
@@ -95,8 +95,8 @@
 									<span class="no-content">{{ctx.Locale.Tr "repo.issues.no_content"}}</span>
 								{{end}}
 								</div>
-								<div id="issuecomment-{{.ID}}-raw" class="raw-content gt-hidden">{{.Content}}</div>
-								<div class="edit-content-zone gt-hidden" data-update-url="{{$.RepoLink}}/comments/{{.ID}}" data-context="{{$.RepoLink}}" data-attachment-url="{{$.RepoLink}}/comments/{{.ID}}/attachments"></div>
+								<div id="issuecomment-{{.ID}}-raw" class="raw-content tw-hidden">{{.Content}}</div>
+								<div class="edit-content-zone tw-hidden" data-update-url="{{$.RepoLink}}/comments/{{.ID}}" data-context="{{$.RepoLink}}" data-attachment-url="{{$.RepoLink}}/comments/{{.ID}}/attachments"></div>
 								{{if .Attachments}}
 									{{template "repo/issue/view_content/attachments" dict "Attachments" .Attachments "RenderedContent" .RenderedContent}}
 								{{end}}
diff --git a/templates/repo/issue/view_content/pull_merge_instruction.tmpl b/templates/repo/issue/view_content/pull_merge_instruction.tmpl
index 4ff38950cd..d585d36574 100644
--- a/templates/repo/issue/view_content/pull_merge_instruction.tmpl
+++ b/templates/repo/issue/view_content/pull_merge_instruction.tmpl
@@ -1,6 +1,6 @@
 <div class="divider"></div>
 <div class="instruct-toggle"> {{ctx.Locale.Tr "repo.pulls.cmd_instruction_hint"}} </div>
-<div class="instruct-content tw-mt-2 gt-hidden">
+<div class="instruct-content tw-mt-2 tw-hidden">
 	<div><h3>{{ctx.Locale.Tr "repo.pulls.cmd_instruction_checkout_title"}}</h3>{{ctx.Locale.Tr "repo.pulls.cmd_instruction_checkout_desc"}}</div>
 	{{$localBranch := .PullRequest.HeadBranch}}
 	{{if ne .PullRequest.HeadRepo.ID .PullRequest.BaseRepo.ID}}
@@ -21,25 +21,25 @@
 			<div>git checkout {{.PullRequest.BaseBranch}}</div>
 			<div>git merge --no-ff {{$localBranch}}</div>
 		</div>
-		<div class="gt-hidden" data-pull-merge-style="rebase">
+		<div class="tw-hidden" data-pull-merge-style="rebase">
 			<div>git checkout {{.PullRequest.BaseBranch}}</div>
 			<div>git merge --ff-only {{$localBranch}}</div>
 		</div>
-		<div class="gt-hidden" data-pull-merge-style="rebase-merge">
+		<div class="tw-hidden" data-pull-merge-style="rebase-merge">
 			<div>git checkout {{$localBranch}}</div>
 			<div>git rebase {{.PullRequest.BaseBranch}}</div>
 			<div>git checkout {{.PullRequest.BaseBranch}}</div>
 			<div>git merge --no-ff {{$localBranch}}</div>
 		</div>
-		<div class="gt-hidden" data-pull-merge-style="squash">
+		<div class="tw-hidden" data-pull-merge-style="squash">
 			<div>git checkout {{.PullRequest.BaseBranch}}</div>
 			<div>git merge --squash {{$localBranch}}</div>
 		</div>
-		<div class="gt-hidden" data-pull-merge-style="fast-forward-only">
+		<div class="tw-hidden" data-pull-merge-style="fast-forward-only">
 			<div>git checkout {{.PullRequest.BaseBranch}}</div>
 			<div>git merge --ff-only {{$localBranch}}</div>
 		</div>
-		<div class="gt-hidden" data-pull-merge-style="manually-merged">
+		<div class="tw-hidden" data-pull-merge-style="manually-merged">
 			<div>git checkout {{.PullRequest.BaseBranch}}</div>
 			<div>git merge {{$localBranch}}</div>
 		</div>
diff --git a/templates/repo/issue/view_content/sidebar.tmpl b/templates/repo/issue/view_content/sidebar.tmpl
index 324175e6cf..bc2a841708 100644
--- a/templates/repo/issue/view_content/sidebar.tmpl
+++ b/templates/repo/issue/view_content/sidebar.tmpl
@@ -47,7 +47,7 @@
 		</div>
 
 		<div class="ui assignees list">
-			<span class="no-select item {{if or .OriginalReviews .PullReviewers}}gt-hidden{{end}}">{{ctx.Locale.Tr "repo.issues.new.no_reviewers"}}</span>
+			<span class="no-select item {{if or .OriginalReviews .PullReviewers}}tw-hidden{{end}}">{{ctx.Locale.Tr "repo.issues.new.no_reviewers"}}</span>
 			<div class="selected">
 				{{range .PullReviewers}}
 					<div class="item tw-flex tw-items-center tw-py-2">
@@ -140,7 +140,7 @@
 		</div>
 	</div>
 	<div class="ui select-milestone list">
-		<span class="no-select item {{if .Issue.Milestone}}gt-hidden{{end}}">{{ctx.Locale.Tr "repo.issues.new.no_milestone"}}</span>
+		<span class="no-select item {{if .Issue.Milestone}}tw-hidden{{end}}">{{ctx.Locale.Tr "repo.issues.new.no_milestone"}}</span>
 		<div class="selected">
 			{{if .Issue.Milestone}}
 				<a class="item muted sidebar-item-link" href="{{.RepoLink}}/milestone/{{.Issue.Milestone.ID}}">
@@ -194,7 +194,7 @@
 			</div>
 		</div>
 		<div class="ui select-project list">
-			<span class="no-select item {{if .Issue.Project}}gt-hidden{{end}}">{{ctx.Locale.Tr "repo.issues.new.no_projects"}}</span>
+			<span class="no-select item {{if .Issue.Project}}tw-hidden{{end}}">{{ctx.Locale.Tr "repo.issues.new.no_projects"}}</span>
 			<div class="selected">
 				{{if .Issue.Project}}
 					<a class="item muted sidebar-item-link" href="{{.Issue.Project.Link ctx}}">
@@ -240,7 +240,7 @@
 		</div>
 	</div>
 	<div class="ui assignees list">
-		<span class="no-select item {{if .Issue.Assignees}}gt-hidden{{end}}">{{ctx.Locale.Tr "repo.issues.new.no_assignees"}}</span>
+		<span class="no-select item {{if .Issue.Assignees}}tw-hidden{{end}}">{{ctx.Locale.Tr "repo.issues.new.no_assignees"}}</span>
 		<div class="selected">
 			{{range .Issue.Assignees}}
 				<div class="item">
@@ -355,7 +355,7 @@
 	<div class="divider"></div>
 	<span class="text"><strong>{{ctx.Locale.Tr "repo.issues.due_date"}}</strong></span>
 	<div class="ui form" id="deadline-loader">
-		<div class="ui negative message gt-hidden" id="deadline-err-invalid-date">
+		<div class="ui negative message tw-hidden" id="deadline-err-invalid-date">
 			{{svg "octicon-x" 16 "close icon"}}
 			{{ctx.Locale.Tr "repo.issues.due_date_invalid"}}
 		</div>
@@ -379,7 +379,7 @@
 		{{end}}
 
 		{{if and .HasIssuesOrPullsWritePermission (not .Repository.IsArchived)}}
-			<div {{if ne .Issue.DeadlineUnix 0}} class="gt-hidden"{{end}} id="deadlineForm">
+			<div {{if ne .Issue.DeadlineUnix 0}} class="tw-hidden"{{end}} id="deadlineForm">
 				<form class="ui fluid action input issue-due-form" action="{{AppSubUrl}}/{{PathEscape .Repository.Owner.Name}}/{{PathEscape .Repository.Name}}/issues/{{.Issue.Index}}/deadline" method="post" id="update-issue-deadline-form">
 					{{$.CsrfTokenHtml}}
 					<input required placeholder="{{ctx.Locale.Tr "repo.issues.due_date_form"}}" {{if gt .Issue.DeadlineUnix 0}}value="{{.Issue.DeadlineUnix.FormatDate}}"{{end}} type="date" name="deadlineDate" id="deadlineDate">
diff --git a/templates/repo/issue/view_title.tmpl b/templates/repo/issue/view_title.tmpl
index 5b846f6b21..b78ff55cda 100644
--- a/templates/repo/issue/view_title.tmpl
+++ b/templates/repo/issue/view_title.tmpl
@@ -8,7 +8,7 @@
 		<h1 class="gt-word-break">
 			<span id="issue-title">{{RenderIssueTitle $.Context .Issue.Title ($.Repository.ComposeMetas ctx) | RenderCodeBlock}} <span class="index">#{{.Issue.Index}}</span>
 </span>
-			<div id="edit-title-input" class="ui input tw-flex-1 gt-hidden">
+			<div id="edit-title-input" class="ui input tw-flex-1 tw-hidden">
 				<input value="{{.Issue.Title}}" maxlength="255" autocomplete="off">
 			</div>
 		</h1>
@@ -22,8 +22,8 @@
 		</div>
 		{{if and (or .HasIssuesOrPullsWritePermission .IsIssuePoster) (not .Repository.IsArchived)}}
 			<div class="edit-buttons">
-				<button id="cancel-edit-title" class="ui small basic button in-edit gt-hidden">{{ctx.Locale.Tr "repo.issues.cancel"}}</button>
-				<button id="save-edit-title" class="ui small primary button in-edit gt-hidden tw-mr-0" data-update-url="{{$.RepoLink}}/issues/{{.Issue.Index}}/title" {{if .Issue.IsPull}}data-target-update-url="{{$.RepoLink}}/pull/{{.Issue.Index}}/target_branch"{{end}}>{{ctx.Locale.Tr "repo.issues.save"}}</button>
+				<button id="cancel-edit-title" class="ui small basic button in-edit tw-hidden">{{ctx.Locale.Tr "repo.issues.cancel"}}</button>
+				<button id="save-edit-title" class="ui small primary button in-edit tw-hidden tw-mr-0" data-update-url="{{$.RepoLink}}/issues/{{.Issue.Index}}/title" {{if .Issue.IsPull}}data-target-update-url="{{$.RepoLink}}/pull/{{.Issue.Index}}/target_branch"{{end}}>{{ctx.Locale.Tr "repo.issues.save"}}</button>
 			</div>
 		{{end}}
 	</div>
@@ -70,7 +70,7 @@
 							{{ctx.Locale.Tr "repo.pulls.title_desc" .NumCommits $headHref $baseHref}}
 						</span>
 					{{end}}
-					<span id="pull-desc-edit" class="gt-hidden flex-text-block">
+					<span id="pull-desc-edit" class="tw-hidden flex-text-block">
 						<div class="ui floating filter dropdown">
 							<div class="ui basic small button tw-mr-0">
 								<span class="text">{{ctx.Locale.Tr "repo.pulls.compare_compare"}}: {{$.HeadTarget}}</span>