附加组件
要尝试这里成千上万的附加组件，下载 Mozilla Firefox，一个快速、自由的上网工具！
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权限
关于这个附加组件
Lets you switch DOM Inspector to an over/under vertical layout instead of the usual side-by-side panel layout. This can make it easier to read long values (like CSS rules) and to navigate deeply-nested tree structures.
This add-on doesn't do anything unless you have DOM Inspector installed too.
This add-on doesn't do anything unless you have DOM Inspector installed too.
