diff --git a/css/def.css b/css/def.css
index 2d9775a2d..b7e6f04ba 100644
--- a/css/def.css
+++ b/css/def.css
@@ -2,7 +2,7 @@
/* 초기화 */
html {overflow-y:scroll}
-body {background:#fff;font-size:1em}
+body {margin:0;padding:0;background:#fff;font-size:1em}
html, body, h1, h2, h3, h4, h5, h6 {margin:0 0 0;padding:0}
h1, h2, h3, h4, h5, h6 {font-family:"verdana","dotum"}
article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section {display:block}
@@ -16,6 +16,11 @@ hr {display:none}
/* 웹접근성 스킬 */
.sound_only {display:inline-block;margin:0;padding:0;width:0;height:0;overflow:hidden}
+/* 자동등록방지 */
+.captcha {display:inline-block;vertical-align:middle}
+.captcha label {display:inline-block;margin:0;padding:0;width:0;height:0;overflow:hidden}
+.captcha iframe {margin:0;padding:0;width:80px;height:25px;border:0;overflow:hidden}
+
/* 기본테이블 */
table {margin-bottom:20px;width:100%;border-collapse:collapse;border-spacing:0}
tfoot td {background:#f9f9f5;font-weight:bold;text-align:center}
diff --git a/plugin/captcha/captcha.lib.php b/plugin/captcha/captcha.lib.php
index 57e0a5763..190710ec3 100644
--- a/plugin/captcha/captcha.lib.php
+++ b/plugin/captcha/captcha.lib.php
@@ -144,15 +144,15 @@ function captcha_html($input_name, $captcha_id_suffix='')
// 세션생성을 한후 다음페이지에서 해당 세션이 있을때만 올바른 캡챠코드인지 비교합니다.
set_session('ss_captcha_use', true);
- $html = '