首先，将三个层次移动到父层次上。

First, move up three levels to the parent.

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如果从网站打开表单，而不是从本地文件系统打开表单，则根本不能写入文件，原因是表单在本地文件系统上没有父文件夹。

If the form is opened from a Web site instead of the local file system, you cannot write to file at all because the form does not have a parent folder on the local file system.

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不要在一个非最近父元素的祖先元素上设置尺寸。

Do not set dimensions on an ancestor that is not an immediate parent.

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