受1楼启发
Document.sdf{
width:500px;
height:500px;
overflow:hidden;
margin:200px auto;
position:relative;
}
.outter{
width:174px;
height:155px;
position:absolute;
top:100px;
left:200px;
transition:all 1s ease;
}
.dd{
background:url(http://www.ppt123.net/beijing/UploadFiles_8374/201203/2012032518062306.jpg);
overflow:hidden;
background-size:174px 155px;
background-position:center center;
transition:all 1s ease;
transform: scale(0,1);
width:174px;
height:155px;
margin:0 auto;
}
$(function() {
$(document).on('click', function() {
$(".dd").css('transform', 'scale(1, 1)');
});
});
