当用按钮包围时，输入类型=“文件”在Firefox中不起作用

If I do this:

如果我这样做:

<input multiple="multiple" type="file" id="upload_titlebar_logo_live" name="upload_titlebar_logo_live" style="position: absolute; right: 0px; top: 0px; font-family: Arial; font-size: 118px; margin: 0px; padding: 0px; cursor: pointer;" />
<input multiple="mult