<div id="m1">
<div class="con">콘텐츠</div>
</div>
<div id="m2">
<div class="c1 bg">내용1</div>
<div class="c2 bg">내용2</div>
<div class="c3 bg">내용3</div>
</div>
$(document).ready(function() {
$("#m1 > div").removeClass("con");
$("#m2 > div").removeClass(function() {
return "bg";
});
});
This Pen doesn't use any external CSS resources.