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display: none 不起作用_html/css_WEB-ITnose

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Release： 2016-06-24 11:15:12
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<html>    <head>        <meta http-equiv="content-type" content='text/html;charset=utf-8'/>        <style>        <!--本页的css样式-->       .reveal * {display: none;}       /*.reveal * {background-color: gray;}*/              .reveal *.handle {display: block;}       .reveal *.handle {background-color: gray;}        </style>    </head>    <body>        <div class="reveal">         <h1 class="handle">Click Here to Reveal Hidden Text</h1>         <p>This paragraph is hidden. It appears when you click on title.</p>        </div>    </body></html>
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.reveal * {display: none;}应该是除了.handle元素外都隐藏，为什么display: none不起作用呢？


回复讨论(解决方案)

重叠了，前面类的display就无效。


       .reveal * {display: none;}的效果被.reveal *.handle {display: block;}覆盖了

首先，把这个注释改了，style标签（即CSS）里面的注释是  /*   */ ，改成 /*本页的css样式*/ 
优先级的问题，.reveal *.handle高于.reveal * {display: none;}，优先级高的生效



这个不是 css的注意语法  下面一行 样式就被破坏了

3,4楼正解，谢谢了

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display: none 不起作用
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