编程学习网为您整理以下代码实例，主要实现：Bootstrap关闭警报框时，添加淡入淡出效果，希望可以帮到各位朋友。
<!DOCTYPE HTML>
<HTML>
<head>
<Title>bootstrap Example</Title>
<link href = "/bootstrap/CSS/bootstrap.min.CSS" rel = "stylesheet">
<script src = "/scripts/jquery.min.Js"></script>
<script src = "/bootstrap/Js/bootstrap.min.Js"></script>
</head>
<body>
<div class="container">
<h2>Eclipse Refactoring</h2>
<div class = "alert alert-danger alert-dismissible fade in">
<a href = "#" class = "close" data-dismiss="alert" aria-label = "close">×</a>
To refactor code in Eclipse, try the below given steps in the vIDeo (You can also close this alert)
</div>
</div>
<div class="container">
<div class = "embed-responsive embed-responsive-16by9">
<iframe class = "embed-responsive-item" src = "https://www.youtube.com/embed/YFVV6RAUnNg "></iframe>
</div>
</div>
</body>
</HTML>
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