모바일 화면 맞춤 php 질문

<?phpinclude_once("./_common.php");include_once("$g4[path]/lib/latest.lib.php");include_once("$g4[path]/lib/latest.lib.plus.php");include_once("$g4[path]/lib/thumbnail.lib.php");include_once("./_head.php");?> <script type="text/javascript" src="<?=$g4[url]?>/js/owl.carousel.min.js"></script><div class="gwidth"></div><div class="gheight"></div><p><a href="주소><img id="img/reload.png" src="img/reload.png"></a></p><br>    <p><img src="img/<?php echo mt_rand(1, 2200)?>.gif"/></p>  <?phpinclude_once("./_tail.php");?>