border="12" cellpadding="0px" cellspacing="0px" align="center" colspan="2"

根据提供的引用内容，border="12"表示边框的宽度为12个像素，cellpadding="0px"表示单元格内部的空白距离为0像素，cellspacing="0px"表示单元格之间的间距为0像素，align="center"表示表格在水平方向上居中对齐，colspan="2"表示该单元格跨越两列。

相关问题

border="1" ALIGN = "CENTER"

在HTML中，border="1"和ALIGN = "CENTER"是用于设置表格的边框和对齐方式的属性。border="1"指示应该显示边框，并指定边框的粗细为1个单位。ALIGN = "CENTER"用于将表格内容在水平方向上居中对齐。
可以将这两个属性放在table标签上，例如：
<table border="1" ALIGN="CENTER"></table><span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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[ .reference_list ]

border="1" cellspacing="0" cellpadding="0"

I'm sorry, I am an AI language model and I don't have a context to understand what you are referring to. Can you please provide more information or context so I can assist you better?