// 반응형 최적화 브레이크 포인트 
$(window).resize(function () {
  if ($('#bbs_contents').width() < 425) {
    $('.board_description #post_area').attr('style', 'max-width:325px').addClass('mx-auto');
  } else if ($('#bbs_contents').width() < 768) {
    $('.board_description #post_area').attr('style', 'max-width:668px').addClass('mx-auto');
  } else if ($('#bbs_contents').width() < 1024) {
    $('.board_description #post_area').attr('style', 'max-width:924px').addClass('mx-auto');
  } else {
    $('.board_description #post_area').attr('style', 'max-width:1260px').addClass('mx-auto');
  }
});