diff --git a/lib/thumbnail.lib.php b/lib/thumbnail.lib.php
index 961c594df..ce53dda2b 100644
--- a/lib/thumbnail.lib.php
+++ b/lib/thumbnail.lib.php
@@ -83,8 +83,8 @@ function get_list_thumbnail($bo_table, $wr_id, $thumb_width, $thumb_height, $is_
 function get_file_thumbnail($file){
     
     if( ! is_array($file) ) return '';
-    
-    if( $contents = run_replace('get_file_thumbnail_tags', '', $file) ){
+
+    if( preg_match('/(\.jpg|\.jpeg|\.gif|\.png|\.bmp)$/i', $file['file']) && $contents = run_replace('get_file_thumbnail_tags', '', $file) ){
         return $contents;
     } else if ($file['view']) {
         return get_view_thumbnail($file['view']);
diff --git a/skin/latest/basic/latest.skin.php b/skin/latest/basic/latest.skin.php
index ca775c519..eb2b00e1e 100644
--- a/skin/latest/basic/latest.skin.php
+++ b/skin/latest/basic/latest.skin.php
@@ -9,7 +9,7 @@ add_stylesheet('<link rel="stylesheet" href="'.$latest_skin_url.'/style.css">',
     <h2 class="lat_title"><a href="<?php echo get_pretty_url($bo_table); ?>"><?php echo $bo_subject ?></a></h2>
     <ul>
     <?php for ($i=0; $i<count($list); $i++) {  ?>
-        <li>
+        <li class="basic_li">
             <?php
             if ($list[$i]['icon_secret']) echo "<i class=\"fa fa-lock\" aria-hidden=\"true\"></i><span class=\"sound_only\">비밀글</span> ";
 
diff --git a/skin/latest/basic/style.css b/skin/latest/basic/style.css
index dc2b0f8d3..bfc67ef81 100644
--- a/skin/latest/basic/style.css
+++ b/skin/latest/basic/style.css
@@ -1,7 +1,7 @@
 @charset "utf-8";
 
 /* 새글 스킨 (latest) */
-.lat {position:relative;margin-bottom:20px;overflow:hidden;background:#fff}
+.lat {position:relative;margin-bottom:20px;background:#fff}
 .lat .lat_title {display:block;line-height:45px;font-size:1.2em;color:#253dbe}
 .lat .lat_title a {position:relative;color:#000;display:inline-block}
 
diff --git a/skin/latest/pic_block/latest.skin.php b/skin/latest/pic_block/latest.skin.php
index fe40496d4..c19ef5c08 100644
--- a/skin/latest/pic_block/latest.skin.php
+++ b/skin/latest/pic_block/latest.skin.php
@@ -23,7 +23,7 @@ $thumb_height = 150;
     }
     $img_content = '<img src="'.$img.'" alt="'.$thumb['alt'].'" >';
     ?>
-        <li>
+        <li class="galley_li">
             <a href="<?php echo $list[$i]['href'] ?>" class="lt_img"><?php echo $img_content; ?></a>
             <?php
             if ($list[$i]['icon_secret']) echo "<i class=\"fa fa-lock\" aria-hidden=\"true\"></i><span class=\"sound_only\">비밀글</span> ";
diff --git a/skin/latest/pic_block/style.css b/skin/latest/pic_block/style.css
index b73646209..607259fce 100644
--- a/skin/latest/pic_block/style.css
+++ b/skin/latest/pic_block/style.css
@@ -1,7 +1,7 @@
 @charset "utf-8";
 
 /* 새글 스킨 (latest) */
-.pic_lt {position:relative;margin-bottom:20px;overflow:hidden;background:#fff}
+.pic_lt {position:relative;margin-bottom:20px;background:#fff}
 .pic_lt .lat_title {display:block;line-height:45px;font-size:1.2em;color:#253dbe}
 .pic_lt .lat_title a {color:#000;display:inline-block;position:relative}
 
@@ -10,6 +10,7 @@
 .pic_lt ul:after {display:block;visibility:hidden;clear:both;content:""}
 .pic_lt ul {margin: 0 -10px}
 .pic_lt li {float:left;width:25%;padding:0 10px}
+.pic_lt li.galley_li:nth-child(4n+1) {clear: both!important}
 .pic_lt li .lt_img {margin:5px 0;display:block}
 .pic_lt li .lt_img img {width:100%;height:auto}
 .pic_lt li a:hover {color:#a22121}
diff --git a/skin/latest/pic_list/latest.skin.php b/skin/latest/pic_list/latest.skin.php
index 71b48d042..57dcec5bb 100644
--- a/skin/latest/pic_list/latest.skin.php
+++ b/skin/latest/pic_list/latest.skin.php
@@ -13,18 +13,24 @@ $thumb_height = 212;
     <ul>
     <?php
     for ($i=0; $i<count($list); $i++) {
-    $thumb = get_list_thumbnail($bo_table, $list[$i]['wr_id'], $thumb_width, $thumb_height, false, true);
+        
+        $img_link_html = '';
+        
+        if( $i === 0 ) {
+            $thumb = get_list_thumbnail($bo_table, $list[$i]['wr_id'], $thumb_width, $thumb_height, false, true);
 
-    if($thumb['src']) {
-        $img = $thumb['src'];
-    } else {
-        $img = G5_IMG_URL.'/no_img.png';
-        $thumb['alt'] = '이미지가 없습니다.';
-    }
-    $img_content = '<img src="'.$img.'" alt="'.$thumb['alt'].'" >';
+            if($thumb['src']) {
+                $img = $thumb['src'];
+            } else {
+                $img = G5_IMG_URL.'/no_img.png';
+                $thumb['alt'] = '이미지가 없습니다.';
+            }
+            $img_content = '<img src="'.$img.'" alt="'.$thumb['alt'].'" >';
+            $img_link_html = '<a href="'.$list[$i]['href'].'" class="lt_img" >'.$img_content.'</a>';
+        }
     ?>
         <li>
-            <a href="<?php echo $list[$i]['href'] ?>" class="lt_img"><?php echo $img_content; ?></a>
+            <?php echo $img_link_html; ?>
             <?php
             if ($list[$i]['icon_secret']) echo "<i class=\"fa fa-lock\" aria-hidden=\"true\"></i><span class=\"sound_only\">비밀글</span> ";
  
diff --git a/skin/latest/pic_list/style.css b/skin/latest/pic_list/style.css
index 8dce78f26..e57392a2c 100644
--- a/skin/latest/pic_list/style.css
+++ b/skin/latest/pic_list/style.css
@@ -1,9 +1,10 @@
 @charset "utf-8";
 
 /* 새글 스킨 (latest) */
-.pic_li_lt {position:relative;width:33.3333%;float:left;padding:0 10px;overflow:hidden;background:#fff}
+.pic_li_lt {position:relative;width:33.3333%;float:left;padding:0 10px;background:#fff}
 .pic_li_lt .lat_title {display:block;line-height:45px;font-size:1.2em;color:#253dbe}
 .pic_li_lt .lat_title a {color:#000;display:inline-block;position:relative}
+.latest_top_wr .pic_li_lt:nth-child(3n+1) {clear: both!important}
 
 .pic_li_lt .lt_more {position:absolute;top:11px;right:10px;display:block;width:25px;line-height:25px;color:#aaa;border-radius:3px;text-align:center}
 .pic_li_lt .lt_more:hover {color:#777}
diff --git a/theme/basic/skin/latest/basic/latest.skin.php b/theme/basic/skin/latest/basic/latest.skin.php
index ca775c519..eb2b00e1e 100644
--- a/theme/basic/skin/latest/basic/latest.skin.php
+++ b/theme/basic/skin/latest/basic/latest.skin.php
@@ -9,7 +9,7 @@ add_stylesheet('<link rel="stylesheet" href="'.$latest_skin_url.'/style.css">',
     <h2 class="lat_title"><a href="<?php echo get_pretty_url($bo_table); ?>"><?php echo $bo_subject ?></a></h2>
     <ul>
     <?php for ($i=0; $i<count($list); $i++) {  ?>
-        <li>
+        <li class="basic_li">
             <?php
             if ($list[$i]['icon_secret']) echo "<i class=\"fa fa-lock\" aria-hidden=\"true\"></i><span class=\"sound_only\">비밀글</span> ";
 
diff --git a/theme/basic/skin/latest/basic/style.css b/theme/basic/skin/latest/basic/style.css
index dc2b0f8d3..bfc67ef81 100644
--- a/theme/basic/skin/latest/basic/style.css
+++ b/theme/basic/skin/latest/basic/style.css
@@ -1,7 +1,7 @@
 @charset "utf-8";
 
 /* 새글 스킨 (latest) */
-.lat {position:relative;margin-bottom:20px;overflow:hidden;background:#fff}
+.lat {position:relative;margin-bottom:20px;background:#fff}
 .lat .lat_title {display:block;line-height:45px;font-size:1.2em;color:#253dbe}
 .lat .lat_title a {position:relative;color:#000;display:inline-block}
 
diff --git a/theme/basic/skin/latest/pic_block/latest.skin.php b/theme/basic/skin/latest/pic_block/latest.skin.php
index fe40496d4..c19ef5c08 100644
--- a/theme/basic/skin/latest/pic_block/latest.skin.php
+++ b/theme/basic/skin/latest/pic_block/latest.skin.php
@@ -23,7 +23,7 @@ $thumb_height = 150;
     }
     $img_content = '<img src="'.$img.'" alt="'.$thumb['alt'].'" >';
     ?>
-        <li>
+        <li class="galley_li">
             <a href="<?php echo $list[$i]['href'] ?>" class="lt_img"><?php echo $img_content; ?></a>
             <?php
             if ($list[$i]['icon_secret']) echo "<i class=\"fa fa-lock\" aria-hidden=\"true\"></i><span class=\"sound_only\">비밀글</span> ";
diff --git a/theme/basic/skin/latest/pic_block/style.css b/theme/basic/skin/latest/pic_block/style.css
index b73646209..607259fce 100644
--- a/theme/basic/skin/latest/pic_block/style.css
+++ b/theme/basic/skin/latest/pic_block/style.css
@@ -1,7 +1,7 @@
 @charset "utf-8";
 
 /* 새글 스킨 (latest) */
-.pic_lt {position:relative;margin-bottom:20px;overflow:hidden;background:#fff}
+.pic_lt {position:relative;margin-bottom:20px;background:#fff}
 .pic_lt .lat_title {display:block;line-height:45px;font-size:1.2em;color:#253dbe}
 .pic_lt .lat_title a {color:#000;display:inline-block;position:relative}
 
@@ -10,6 +10,7 @@
 .pic_lt ul:after {display:block;visibility:hidden;clear:both;content:""}
 .pic_lt ul {margin: 0 -10px}
 .pic_lt li {float:left;width:25%;padding:0 10px}
+.pic_lt li.galley_li:nth-child(4n+1) {clear: both!important}
 .pic_lt li .lt_img {margin:5px 0;display:block}
 .pic_lt li .lt_img img {width:100%;height:auto}
 .pic_lt li a:hover {color:#a22121}
diff --git a/theme/basic/skin/latest/pic_list/latest.skin.php b/theme/basic/skin/latest/pic_list/latest.skin.php
index 71b48d042..57dcec5bb 100644
--- a/theme/basic/skin/latest/pic_list/latest.skin.php
+++ b/theme/basic/skin/latest/pic_list/latest.skin.php
@@ -13,18 +13,24 @@ $thumb_height = 212;
     <ul>
     <?php
     for ($i=0; $i<count($list); $i++) {
-    $thumb = get_list_thumbnail($bo_table, $list[$i]['wr_id'], $thumb_width, $thumb_height, false, true);
+        
+        $img_link_html = '';
+        
+        if( $i === 0 ) {
+            $thumb = get_list_thumbnail($bo_table, $list[$i]['wr_id'], $thumb_width, $thumb_height, false, true);
 
-    if($thumb['src']) {
-        $img = $thumb['src'];
-    } else {
-        $img = G5_IMG_URL.'/no_img.png';
-        $thumb['alt'] = '이미지가 없습니다.';
-    }
-    $img_content = '<img src="'.$img.'" alt="'.$thumb['alt'].'" >';
+            if($thumb['src']) {
+                $img = $thumb['src'];
+            } else {
+                $img = G5_IMG_URL.'/no_img.png';
+                $thumb['alt'] = '이미지가 없습니다.';
+            }
+            $img_content = '<img src="'.$img.'" alt="'.$thumb['alt'].'" >';
+            $img_link_html = '<a href="'.$list[$i]['href'].'" class="lt_img" >'.$img_content.'</a>';
+        }
     ?>
         <li>
-            <a href="<?php echo $list[$i]['href'] ?>" class="lt_img"><?php echo $img_content; ?></a>
+            <?php echo $img_link_html; ?>
             <?php
             if ($list[$i]['icon_secret']) echo "<i class=\"fa fa-lock\" aria-hidden=\"true\"></i><span class=\"sound_only\">비밀글</span> ";
  
diff --git a/theme/basic/skin/latest/pic_list/style.css b/theme/basic/skin/latest/pic_list/style.css
index 8dce78f26..e57392a2c 100644
--- a/theme/basic/skin/latest/pic_list/style.css
+++ b/theme/basic/skin/latest/pic_list/style.css
@@ -1,9 +1,10 @@
 @charset "utf-8";
 
 /* 새글 스킨 (latest) */
-.pic_li_lt {position:relative;width:33.3333%;float:left;padding:0 10px;overflow:hidden;background:#fff}
+.pic_li_lt {position:relative;width:33.3333%;float:left;padding:0 10px;background:#fff}
 .pic_li_lt .lat_title {display:block;line-height:45px;font-size:1.2em;color:#253dbe}
 .pic_li_lt .lat_title a {color:#000;display:inline-block;position:relative}
+.latest_top_wr .pic_li_lt:nth-child(3n+1) {clear: both!important}
 
 .pic_li_lt .lt_more {position:absolute;top:11px;right:10px;display:block;width:25px;line-height:25px;color:#aaa;border-radius:3px;text-align:center}
 .pic_li_lt .lt_more:hover {color:#777}