forgejo/templates/ng/base/alert.tmpl

{{if .Flash.ErrorMsg}}<span class="alert alert-red alert-radius block text-bold"><i class="octicon octicon-alert"></i>{{.Flash.ErrorMsg|Str2html}}</span>{{end}}
{{if .Flash.SuccessMsg}}<div class="alert alert-green alert-radius block"><i class="octicon octicon-check"></i>{{.Flash.SuccessMsg|Str2html}}</div>{{end}}
{{if .Flash.InfoMsg}}<div class="alert alert-blue alert-radius block"><i class="octicon octicon-info"></i>{{.Flash.InfoMsg|Str2html}}</div>{{end}}