<!DOCTYPE html>
<html>
<head>
<title></title>
<style type="text/css">
body{margin: 0;padding: 0;background-color: #fff;}
.meng-mask{100%;background: rgba(0,0,0,.4);z-index: 99999;height: 100%;display: none;position: absolute;}
.mengbox{ 80%;margin-left: 10%;height:120px;background-color: #f5f5f5;z-index: 9999999;position:absolute;margin-top: -100%;border-radius: 10px;}
.box-model{ 100%;height: 120px;position: relative;}
.box-btn{ 100%;position: absolute;bottom: 0;border-top: 1px solid #d7d7d7;padding: 0;margin: 0;}
.box-btn li{ 50%;float: left;height: 40px;line-height: 40px;text-align: center;list-style-type:none;box-sizing:border-box;-moz-box-sizing:border-box; /* Firefox */-webkit-box-sizing:border-box; /* Safari */}
.box-cancel{border-right: 1px solid #d7d7d7;}
.box-body{ 100%;padding: 20px 5%;font-size: 1.4em;text-align: center;}
.btn-ok{height: 40px; 50%;margin-left: 25%;background-color: #FCFCFC;text-align: center;line-height: 40px;color: #507DE9;font-size: 1.4em;font-weight: bold;border-radius: 20px;border: 1px solid #507DE9;position: absolute;top:30%;}
</style>
</head>
<body>
<div class="mengbox">
<div class="box-model">
<div class="box-body"></div>
<ul class="box-btn">
<li class="box-cancel">取消</li>
<li class="box-ok">确定</li>
</ul>
</div>
</div>
<div class="meng-mask"></div>
<div class="btn-ok">提交</div>
</body>
</html>
<script src="js/jquery-1.10.2.js"></script>
<script type="text/javascript">
$(".btn-ok").click(function() {
$(".box-body").html("您好，这是一个提示框");
$(".meng-mask").fadeIn(500);
$(".mengbox").animate({ "margin-top": "50%" }, 500);
});
$(".box-btn li").click(function() {
$(".mengbox").animate({ "margin-top": "-100%" }, 500);
setTimeout(function() { $(".meng-mask").fadeOut(500); }, 150);
});
</script>
效果图：
