Change from inline css to using css class

Signed-off-by: ByLCY <[email protected]>

Author: ByLCY

templates/user/auth/captcha.tmpl

@@ -22,7 +22,7 @@
 		<div class="m-captcha" data-sitekey="{{.McaptchaSitekey}}" data-instance-url="{{.McaptchaURL}}"></div>
 	</div>
 {{else if eq .CaptchaType "cfturnstile"}}
-	<div class="inline field captcha-field" style="text-align: center">
+	<div class="inline field captcha-field tc">
 		<div class="cf-turnstile" data-sitekey="{{.CfTurnstileSitekey}}"></div>
 	</div>
 {{end}}{{end}}