com/templates/repo/diff/new_review.tmpl

<div class="ui top right pointing dropdown custom" id="review-box">
	<div class="ui tiny green button btn-review">
		<span class="text">{{.i18n.Tr "repo.diff.review"}}</span>
		<i class="dropdown icon"></i>
	</div>
	<div class="menu">
		<div class="ui clearing segment">
			<form class="ui form" action="{{.Link}}/reviews/submit" method="post">
			{{.CsrfTokenHtml}}
				<i class="ui right floated link icon close"></i>
				<div class="header">
				{{$.i18n.Tr "repo.diff.review.header"}}
				</div>
				<div class="ui field">
					<textarea name="content" tabindex="0" rows="2"
							  placeholder="{{$.i18n.Tr "repo.diff.review.placeholder"}}"></textarea>
				</div>
				<div class="ui divider"></div>
				<button type="submit" name="type" value="approve" {{ if and $.IsSigned ($.Issue.IsPoster $.SignedUser.ID) }} disabled {{ end }}
						class="ui submit green tiny button btn-submit">{{$.i18n.Tr "repo.diff.review.approve"}}</button>
				<button type="submit" name="type" value="comment"
					        class="ui submit tiny basic button btn-submit">{{$.i18n.Tr "repo.diff.review.comment"}}</button>
				<button type="submit" name="type" value="reject" {{ if and $.IsSigned ($.Issue.IsPoster $.SignedUser.ID) }} disabled {{ end }}
						class="ui submit red tiny button btn-submit">{{$.i18n.Tr "repo.diff.review.reject"}}</button>
			</form>
		</div>
	</div>
</div>