최신갤러리 제목이 길어지면 한줄인 상태로 이미지 가로크기에서 잘려지는데요

제목길이가 길어도 잘리지 않고 다음줄로 자동으로 넘어가도록 하려면 어디를 어떻게 수정해야 되나요? 

-- latest.skin.php ------------------------------------------------------------------------------------------

<?php
if (!defined('_GNUBOARD_')) exit; // 개별 페이지 접근 불가
include_once(G5_LIB_PATH.'/thumbnail.lib.php');

// add_stylesheet('css 구문', 출력순서); 숫자가 작을 수록 먼저 출력됨
add_stylesheet('<link rel="stylesheet" href="'.$latest_skin_url.'/style.css">', 0);
$thumb_width = 250;
$thumb_height = 250;
?>

<div class="pic_lt my_shadow h-100">
    <h4 class="lat_title"><a href="<?php echo G5_BBS_URL ?>/board.php?bo_table=<?php echo $bo_table ?>">
 <?php if($bo_table=="top_member") { ?><img src='<?php echo G5_THEME_IMG_URL ?>/modern/top_member_t.gif' border='0' align='absmiddle'>
    <?php } else if($bo_table=="vietnam_member") { ?><img src='<?php echo G5_THEME_IMG_URL ?>/modern/vietnam_member_t.gif' border='0' align='absmiddle'>
    <?php } else if($bo_table=="philippine_member") { ?><img src='<?php echo G5_THEME_IMG_URL ?>/modern/philippine_member_t.gif' border='0' align='absmiddle'>
        <?php } else if($bo_table=="combodia_member") { ?><img src='<?php echo G5_THEME_IMG_URL ?>/modern/cambodia_member_t.gif' border='0' align='absmiddle'>
                <?php } ?>
 
 
</a></h4>
    <ul class="row">
    <?php
    for ($i=0; $i<count($list); $i++) {
    $thumb = get_list_thumbnail($bo_table, $list[$i]['wr_id'], $thumb_width, $thumb_height, false, true);
 
  
 
 $file_source=$thumb['src'];
 $file_source=str_replace("http://","", $file_source);
 $file_source=str_replace($_SERVER['HTTP_HOST'],"", $file_source);

    if($thumb['src']) {
        $img = $thumb['src'];
    } else {
        $img = G5_THEME_IMG_URL.'/no_image.png';
        $thumb['alt'] = '이미지가 없습니다.';
    }
 
 if ($i > 0)
  $img=$latest_skin_url."/image.php?f=".$file_source;

    $img_content = '<img src="'.$img.'" alt="'.$thumb['alt'].'" >';
    ?>
        <li class="col-lg-3 col-md-3 col-6 mb-1">        
            <a href="<?php echo $list[$i]['href'] ?>" class="lt_img"><?php echo $img_content; ?></a>
            <div class="max-lines">
            <?php
           // if ($list[$i]['icon_secret']) echo "<i class=\"fa fa-lock\" aria-hidden=\"true\"></i><span class=\"sound_only\">비밀글</span> ";

            //if ($list[$i]['icon_new']) echo "<span class=\"new_icon\">N<span class=\"sound_only\">새글</span></span>";

            //if ($list[$i]['icon_hot']) echo "<span class=\"hot_icon\">H<span class=\"sound_only\">인기글</span></span>";

            echo "<a href=\"".$list[$i]['href']."\"> ";
            if ($list[$i]['is_notice'])
                echo "<strong>".$list[$i]['subject']."</strong>";
            else
                echo $list[$i]['subject'];

            // if ($list[$i]['link']['count']) { echo "[{$list[$i]['link']['count']}]"; }
            // if ($list[$i]['file']['count']) { echo "<{$list[$i]['file']['count']}>"; }

             //echo $list[$i]['icon_reply']." ";
           // if ($list[$i]['icon_file']) echo " <i class=\"fa fa-download\" aria-hidden=\"true\"></i>" ;
            //if ($list[$i]['icon_link']) echo " <i class=\"fa fa-link\" aria-hidden=\"true\"></i>" ;

            if ($list[$i]['comment_cnt'])  echo "
            <span class=\"lt_cmt\">+ ".$list[$i]['wr_comment']."</span>";
            echo "</a>";
            echo "</div>";
            ?>
   
        </li>
    <?php }  ?>
    <?php if (count($list) == 0) { //게시물이 없을 때  ?>
    <li class="empty_li">게시물이 없습니다.</li>
    <?php }  ?>
    </ul>
    <a href="<?php echo G5_BBS_URL ?>/board.php?bo_table=<?php echo $bo_table ?>" class="lt_more"><span class="sound_only"><?php echo $bo_subject ?></span><img src='<?php echo G5_THEME_IMG_URL ?>/modern/more.gif' border='0' align='absmiddle'></a>

</div>

-- style.css --------------------------------------------------------------------------------------------------

@charset "utf-8";
/* 새글 스킨 (latest) */
.pic_lt{position:relative;overflow:hidden;border: 1px solid rgba(0,0,0,.125);background:#fff;border-radius: .25rem;}
.pic_lt .lat_title {display:block;background-color:rgba(0,0,0,.03);padding:0 20px;line-height:35px;font-size:1.5rem;border-bottom:1px solid rgba(0,0,0,.125);color:#253dbe;}
.pic_lt .lat_title a{color:rgb(90, 90, 90);text-decoration:none;display:inline-block;position:relative}
.pic_lt .lat_title a:after{position:absolute;bottom:-1px;left:0;width:100%;height:2px;background: #007bff;content:''}
.pic_lt .lt_more {position:absolute;top:5px;right:10px;display:block;width:80px;line-height:25px;color:#aaa;border-radius:3px;text-align:center;}
.pic_lt .lt_more:hover{color:#777}
.pic_lt ul:after {display:block;visibility:hidden;clear:both;content:""}
.pic_lt ul{padding:10px 15px 0;list-style-type:none;margin-bottom:0}
.pic_lt li{padding:0 10px}
.pic_lt li .lt_img{margin:5px 0 10px;display:block}
.pic_lt li .lt_img img{width:100%;height:auto}
.pic_lt li a {color:rgb(90, 90, 90);text-decoration:none;line-height:1.5rem;}
.pic_lt li a:hover{color:#333}
.pic_lt li .fa-heart{color:#ff0000;}
.pic_lt li .fa-lock{display: inline-block;line-height: 14px;width: 16px;font-size: 0.7em;font-weight: 600;color: #4f818c;background: #cbe3e8;text-align: center;border-radius: 2px;font-size: 12px;border:1px solid #a2c6ce}
.pic_lt li .new_icon{display:inline-block;width: 16px;line-height:16px ;font-size:0.7em;font-weight: 600;color:#fff;background:#0069d9;text-align:center;border-radius: 2px;}
.pic_lt li .hot_icon{display:inline-block;width: 16px;line-height:16px ;font-size:0.7em;font-weight: 600;color:#fff;background:#e52955;text-align:center;border-radius: 2px;}
.pic_lt li .fa-caret-right{color:#bbb}
.pic_lt .lt_cmt{color:#222; font-size:11px;height:16px;line-height:16px;padding:0 5px;border-radius:3px;white-space: nowrap;
-webkit-box-shadow: inset 0 2px 5px  rgba(255,255,255,0.4);
-moz-box-shadow: inset 0 2px 5px  rgba(255,255,255,0.4);
box-shadow: inset 0 2px 5px  rgba(255,255,255,0.4);}
.pic_lt .lt_date{display:block;margin-top:5px;color: #333;line-height:1.5rem;font-size:0.85rem;}
.max-lines {display: block;text-overflow: ellipsis;word-wrap: break-word;overflow: hidden;max-height: 1.6rem;line-height: 1.6rem;}