diff --git a/public/img/svg/gitea-join.svg b/public/img/svg/gitea-join.svg
new file mode 100644
index 0000000000..678b9374f7
--- /dev/null
+++ b/public/img/svg/gitea-join.svg
@@ -0,0 +1 @@
+<svg viewBox="0 0 16 16" class="svg gitea-join" width="16" height="16" aria-hidden="true"><path d="M14 10.9V8.75h1.25a.75.75 0 0 0 0-1.5H14V5.1a.25.25 0 0 0-.43-.17l-2.9 2.9a.25.25 0 0 0 0 .35l2.9 2.9a.25.25 0 0 0 .43-.18ZM.75 8.75a.75.75 0 0 1 0-1.5H2V5.1a.25.25 0 0 1 .43-.17l2.9 2.9a.25.25 0 0 1 0 .35l-2.9 2.9A.25.25 0 0 1 2 10.9V8.75Zm6.5-6.5a.75.75 0 0 0 1.5 0v-.5a.75.75 0 0 0-1.5 0zM8 6a.75.75 0 0 1-.75-.75v-.5a.75.75 0 0 1 1.5 0v.5A.75.75 0 0 1 8 6Zm-.75 2.25a.75.75 0 0 0 1.5 0v-.5a.75.75 0 0 0-1.5 0zM8 12a.75.75 0 0 1-.75-.75v-.5a.75.75 0 0 1 1.5 0v.5A.75.75 0 0 1 8 12Zm-.75 2.25a.75.75 0 0 0 1.5 0v-.5a.75.75 0 0 0-1.5 0z"/></svg>
\ No newline at end of file
diff --git a/public/img/svg/gitea-split.svg b/public/img/svg/gitea-split.svg
new file mode 100644
index 0000000000..f819255cca
--- /dev/null
+++ b/public/img/svg/gitea-split.svg
@@ -0,0 +1 @@
+<svg viewBox="0 0 16 16" class="svg gitea-split" width="16" height="16" aria-hidden="true"><path d="M7.25 14.25a.75.75 0 0 0 1.5 0v-.5a.75.75 0 0 0-1.5 0zM8 12a.75.75 0 0 1-.75-.75v-.5a.75.75 0 0 1 1.5 0v.5A.75.75 0 0 1 8 12Zm-.75-3.75a.75.75 0 0 0 1.5 0v-.5a.75.75 0 0 0-1.5 0zM8 6a.75.75 0 0 1-.75-.75v-.5a.75.75 0 0 1 1.5 0v.5A.75.75 0 0 1 8 6Zm-.75-3.75a.75.75 0 0 0 1.5 0v-.5a.75.75 0 0 0-1.5 0zm4.1 6.5a.75.75 0 0 1 0-1.5h1.25V5.1a.25.25 0 0 1 .43-.17l2.9 2.9a.25.25 0 0 1 0 .35l-2.9 2.9a.25.25 0 0 1-.43-.18V8.75ZM3.4 10.9V8.75h1.25a.75.75 0 0 0 0-1.5H3.4V5.1a.25.25 0 0 0-.43-.17l-2.9 2.9a.25.25 0 0 0 0 .35l2.9 2.9a.25.25 0 0 0 .43-.18z"/></svg>
\ No newline at end of file
diff --git a/public/img/svg/gitea-whitespace.svg b/public/img/svg/gitea-whitespace.svg
new file mode 100644
index 0000000000..6b34f33736
--- /dev/null
+++ b/public/img/svg/gitea-whitespace.svg
@@ -0,0 +1 @@
+<svg viewBox="0 0 15 15" class="svg gitea-whitespace" width="16" height="16" aria-hidden="true"><path d="m2.5 7.5.35.35a.5.5 0 0 0 0-.7l-.35.35ZM3 4h12V3H3v1Zm4 4h8V7H7v1Zm-4 4h12v-1H3v1ZM.85 9.85l2-2-.7-.7-2 2 .7.7Zm2-2.7-2-2-.7.7 2 2 .7-.7Z"/></svg>
\ No newline at end of file
diff --git a/templates/repo/diff/box.tmpl b/templates/repo/diff/box.tmpl
index fdc6db2f1a..2fbc5b0e10 100644
--- a/templates/repo/diff/box.tmpl
+++ b/templates/repo/diff/box.tmpl
@@ -13,14 +13,14 @@
 	<h4>{{.i18n.Tr "repo.diff.data_not_available"}}</h4>
 {{else}}
 	<div>
-		<div class="diff-detail-box diff-box sticky df sb ac">
+		<div class="diff-detail-box diff-box sticky df sb ac fw">
 			<div class="diff-detail-stats df ac">
 				{{svg "octicon-diff" 16 "mr-2"}}{{.i18n.Tr "repo.diff.stats_desc" .Diff.NumFiles .Diff.TotalAddition .Diff.TotalDeletion | Str2html}}
 			</div>
 			<div class="diff-detail-actions df ac">
 				{{if and .PageIsPullFiles $.SignedUserID (not .IsArchived)}}
 					<progress id="viewed-files-summary" class="mr-2" value="{{.Diff.NumViewedFiles}}" max="{{.Diff.NumFiles}}"></progress>
-					<label for="viewed-files-summary" id="viewed-files-summary-label" class="mr-2" data-text-changed-template="{{.i18n.Tr "repo.pulls.viewed_files_label"}}">
+					<label for="viewed-files-summary" id="viewed-files-summary-label" class="mr-3" data-text-changed-template="{{.i18n.Tr "repo.pulls.viewed_files_label"}}">
 						{{.i18n.Tr "repo.pulls.viewed_files_label" .Diff.NumViewedFiles .Diff.NumFiles}}
 					</label>
 				{{end}}
diff --git a/templates/repo/diff/new_review.tmpl b/templates/repo/diff/new_review.tmpl
index e4110b50ed..44361c8f73 100644
--- a/templates/repo/diff/new_review.tmpl
+++ b/templates/repo/diff/new_review.tmpl
@@ -1,5 +1,5 @@
 <div class="ui top right pointing dropdown custom" id="review-box">
-	<div class="ui tiny green button btn-review">
+	<div class="ui tiny green button btn-review ml-2 mr-0">
 		{{.i18n.Tr "repo.diff.review"}}
 		<span class="ui small label review-comments-counter" data-pending-comment-number="{{.PendingCodeCommentNumber}}">{{.PendingCodeCommentNumber}}</span>
 		{{svg "octicon-triangle-down" 14 "dropdown icon"}}
diff --git a/templates/repo/diff/options_dropdown.tmpl b/templates/repo/diff/options_dropdown.tmpl
index a6ac49210f..bd852dd630 100644
--- a/templates/repo/diff/options_dropdown.tmpl
+++ b/templates/repo/diff/options_dropdown.tmpl
@@ -1,6 +1,5 @@
-<div class="ui dropdown tiny basic button">
-	{{.i18n.Tr "repo.diff.options_button"}}
-	{{svg "octicon-triangle-down" 14 "dropdown icon"}}
+<div class="ui dropdown tiny basic button icon-button tooltip" data-content="{{.i18n.Tr "repo.diff.options_button"}}">
+	{{svg "octicon-kebab-horizontal"}}
 	<div class="menu">
 		<a class="item tiny basic toggle button" data-target="#diff-files">{{.i18n.Tr "repo.diff.show_diff_stats"}}</a>
 		{{if .Issue.Index}}
diff --git a/templates/repo/diff/whitespace_dropdown.tmpl b/templates/repo/diff/whitespace_dropdown.tmpl
index 7ea4238d6d..95062d87d3 100644
--- a/templates/repo/diff/whitespace_dropdown.tmpl
+++ b/templates/repo/diff/whitespace_dropdown.tmpl
@@ -1,5 +1,5 @@
-<div class="ui dropdown tiny basic button">
-	{{.i18n.Tr "repo.diff.whitespace_button"}}
+<div class="ui dropdown tiny basic button icon-button tooltip" data-content="{{.i18n.Tr "repo.diff.whitespace_button"}}">
+	{{svg "gitea-whitespace"}}
 	{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 	<div class="menu">
 		<a class="item" href="?style={{if .IsSplitStyle}}split{{else}}unified{{end}}&whitespace=show-all">
@@ -20,4 +20,4 @@
 		</a>
 	</div>
 </div>
-<a class="ui tiny basic toggle button" href="?style={{if .IsSplitStyle}}unified{{else}}split{{end}}&whitespace={{$.WhitespaceBehavior}}">{{ if .IsSplitStyle }}{{.i18n.Tr "repo.diff.show_unified_view"}}{{else}}{{.i18n.Tr "repo.diff.show_split_view"}}{{end}}</a>
+<a class="ui tiny basic toggle button icon-button tooltip" href="?style={{if .IsSplitStyle}}unified{{else}}split{{end}}&whitespace={{$.WhitespaceBehavior}}" data-content="{{if .IsSplitStyle}}{{.i18n.Tr "repo.diff.show_unified_view"}}{{else}}{{.i18n.Tr "repo.diff.show_split_view"}}{{end}}">{{if .IsSplitStyle}}{{svg "gitea-join"}}{{else}}{{svg "gitea-split"}}{{end}}</a>
diff --git a/web_src/less/_base.less b/web_src/less/_base.less
index cfaa2e3c4d..eeb0fe35ec 100644
--- a/web_src/less/_base.less
+++ b/web_src/less/_base.less
@@ -299,6 +299,12 @@ a.commit-statuses-trigger {
   &:extend(.unselectable);
 }
 
+/* try to match button with no icons in height */
+.icon-button {
+  padding-top: 7.42px !important;
+  padding-bottom: 7.42px !important;
+}
+
 .ui.breadcrumb a:hover {
   text-decoration: underline !important;
 }
diff --git a/web_src/svg/gitea-join.svg b/web_src/svg/gitea-join.svg
new file mode 100644
index 0000000000..04c3e92ee5
--- /dev/null
+++ b/web_src/svg/gitea-join.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16"><path d="M14 10.9V8.75h1.25a.75.75 0 0 0 0-1.5H14V5.1a.25.25 0 0 0-.43-.17l-2.9 2.9a.25.25 0 0 0 0 .35l2.9 2.9a.25.25 0 0 0 .43-.18ZM.75 8.75a.75.75 0 0 1 0-1.5H2V5.1a.25.25 0 0 1 .43-.17l2.9 2.9a.25.25 0 0 1 0 .35l-2.9 2.9A.25.25 0 0 1 2 10.9V8.75Zm6.5-6.5a.75.75 0 0 0 1.5 0v-.5a.75.75 0 0 0-1.5 0zM8 6a.75.75 0 0 1-.75-.75v-.5a.75.75 0 0 1 1.5 0v.5A.75.75 0 0 1 8 6Zm-.75 2.25a.75.75 0 0 0 1.5 0v-.5a.75.75 0 0 0-1.5 0zM8 12a.75.75 0 0 1-.75-.75v-.5a.75.75 0 0 1 1.5 0v.5A.75.75 0 0 1 8 12Zm-.75 2.25a.75.75 0 0 0 1.5 0v-.5a.75.75 0 0 0-1.5 0z"/></svg>
\ No newline at end of file
diff --git a/web_src/svg/gitea-split.svg b/web_src/svg/gitea-split.svg
new file mode 100644
index 0000000000..e5686b28a3
--- /dev/null
+++ b/web_src/svg/gitea-split.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16"><path d="M7.25 14.25a.75.75 0 0 0 1.5 0v-.5a.75.75 0 0 0-1.5 0zM8 12a.75.75 0 0 1-.75-.75v-.5a.75.75 0 0 1 1.5 0v.5A.75.75 0 0 1 8 12ZM7.25 8.25a.75.75 0 0 0 1.5 0v-.5a.75.75 0 0 0-1.5 0zM8 6a.75.75 0 0 1-.75-.75v-.5a.75.75 0 0 1 1.5 0v.5A.75.75 0 0 1 8 6ZM7.25 2.25a.75.75 0 0 0 1.5 0v-.5a.75.75 0 0 0-1.5 0zM11.35 8.75a.75.75 0 0 1 0-1.5h1.25V5.1a.25.25 0 0 1 .43-.17l2.9 2.9a.25.25 0 0 1 0 .35l-2.9 2.9a.25.25 0 0 1-.43-.18V8.75ZM3.4 10.9V8.75h1.25a.75.75 0 0 0 0-1.5H3.4V5.1a.25.25 0 0 0-.43-.17l-2.9 2.9a.25.25 0 0 0 0 .35l2.9 2.9a.25.25 0 0 0 .43-.18z"/></svg>
\ No newline at end of file
diff --git a/web_src/svg/gitea-whitespace.svg b/web_src/svg/gitea-whitespace.svg
new file mode 100644
index 0000000000..1588c04225
--- /dev/null
+++ b/web_src/svg/gitea-whitespace.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="15" height="15" viewBox="0 0 15 15"><path d="m2.5 7.5.35.35a.5.5 0 0 0 0-.7l-.35.35ZM3 4h12V3H3v1Zm4 4h8V7H7v1Zm-4 4h12v-1H3v1ZM.85 9.85l2-2-.7-.7-2 2 .7.7Zm2-2.7-2-2-.7.7 2 2 .7-.7Z"/></svg>
\ No newline at end of file