Can I Make an Empty Cell's Border Visible in CSS?
In Internet Explorer 7, an empty cell's border may not appear by default. However, there are a few ways to address this issue.
Using a Non-Breaking Space
If it's feasible, inserting a non-breaking space ( ) into the empty cell can force the browser to render the cell with a border.
Pure CSS Solution
For a CSS-only solution, you may need to set the empty-cells property. In IE8, this property can be set to show to make empty cells visible.
IE7 Quirks
However, in IE7, setting empty-cells to show has no effect. In this case, it's not possible to show the border of an empty cell using pure CSS.
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