1，Bootstrap 模态框插件Bootbox垂直居中样式：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Bootstrap </title>
<!--[if lt IE 9]>
<script src="https://cdn.bootcss.com/html5shiv/3.7.3/html5shiv.js"></script>
<script src="https://cdn.bootcss.com/respond.js/1.4.2/respond.js"></script>
<![endif]-->
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.css" rel="external nofollow" rel="external nofollow" rel="stylesheet">
<script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.js"></script>
<script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.js"></script>
<script src="https://cdn.bootcss.com/bootbox.js/4.4.0/bootbox.js"></script> <style>
/* 模态框居中样式 */
.bootbox-container {
position: fixed;
top: 0;
right: 0;
bottom: 0;
left: 0;
z-index: 1049;
overflow-y: auto;
} .bootbox-container:empty {
position: static;
} .modal {
display: table;
width: 600px;
height: 100%;
margin: 0 auto;
} .modal-dialog {
display: table-cell;
vertical-align: middle;
}
/* //模态框居中样式 */
</style>
<script>
$(function () {
/*设置bootbox*/
bootbox.setLocale("zh_CN");
bootbox.setDefaults({container: '.bootbox-container'}); /*使用bootbox*/
bootbox.dialog({message: '<img src="https://www.cnblogs.com/images/logo_small.gif"/>'}).width(155);
});
</script>
</head>
<body><h1>Hello, world!</h1><!--bootbox容器-->
<div class="bootbox-container"></div>
</body>
</html>
2，Bootstrap模态框Modal垂直居中样式：
<!DOCTYPE html>
<html lang="en"><head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Bootstrap </title>
<!--[if lt IE 9]>
<script src="https://cdn.bootcss.com/html5shiv/3.7.3/html5shiv.js"></script>
<script src="https://cdn.bootcss.com/respond.js/1.4.2/respond.js"></script>
<![endif]-->
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.css" rel="external nofollow" rel="external nofollow" rel="stylesheet">
<script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.js"></script>
<script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.js"></script>
<script src="https://cdn.bootcss.com/bootbox.js/4.4.0/bootbox.js"></script> <style>
/* 模态框居中样式 */
.modal {
display: table;
width: 600px;
height: 100%;
margin: 0 auto;
} .modal-dialog {
display: table-cell;
vertical-align: middle;
} /* //模态框居中样式 */
</style>
</head><body> <h2>创建模态框（Modal）</h2>
<!-- 按钮触发模态框 -->
<button class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">开始演示模态框</button>
<!-- 模态框（Modal） -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title" id="myModalLabel">模态框（Modal）标题</h4>
</div>
<div class="modal-body">
<p>在这里添加一些文本</p>
<p>在这里添加一些文本</p>
<p>在这里添加一些文本</p>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">关闭</button>
<button type="button" class="btn btn-primary">提交更改</button>
</div>
</div>
<!-- /.modal-content -->
</div>
<!-- /.modal -->
</div></body></html>
