css 가 안보입니다

<?php

if (!defined('_GNUBOARD_')) exit; // 개별 페이지 접근 불가

 

if (!defined('_INDEX_')) define('_INDEX_', true);

 

include_once(G5_THEME_MOBILE_PATH.'/head.php');

include_once(G5_CAPTCHA_PATH.'/captcha.lib.php');

include_once(G5_LIB_PATH.'/popular.lib.php');

 

add_javascript('<script src="'.G5_JS_URL.'/jquery.bxslider.js"></script>', 10);

?>

<div class="gal_tab tabs" style="width:100%;">

    <div id="tab_top">

        <div class="pic_tab_heading" role="tablist" aria-label="Entertainment">

            <button role="tab" aria-selected="true" aria-controls="nils-tab" id="nils">사진</button>

            <button role="tab" aria-selected="false" aria-controls="agnes-tab" id="agnes" tabindex="-1">글</button>

 

            <!--

            <button role="tab" aria-selected="false" aria-controls="ctc-tab" id="contact" tabindex="-2">연락하기</button>

            -->

 

        </div>

    </div>