css display:none 隐藏元素

编辑代码

<!DOCTYPE html>
<html>
<head>
<style>
h1.hidden {display:none;}
</style>
</head>

<body>
<h1>This is a visible heading</h1>
<h1 class="hidden">This is a hidden heading</h1>
<p>Notice that the hidden heading does not take up space.</p>
</body>

</html>