div {
width: 640px;
height: 254px;
background-color: #eee;
}
.ex1 {
background-image :
url('http://ezcode.kr/study/css/img/tulip.png');
}
.ex2 {
background-image :
url('http://ezcode.kr/study/css/img/tulip.png'),
url('http://ezcode.kr/study/css/img/smile.png');
}
<!DOCTYPE html>
<html lang="ko">
<head></head>
<body>
<h1>background-image</h1>
<div class="ex1">배경이미지</div>
<div class="ex2">배경이미지 2개 적용</div>
</body>
</html>