2.1.114 [CSS-Level2-2009] Section 17.6, Borders
V0279:
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‘border-collapse’ Value: collapse | separate | inherit Initial: separate Applies to: 'table' and 'inline-table' elements Inherited: yes Percentages: N/A Media: visual Computed value: as specified This property selects a table's border model. The value 'separate' selects the separated borders border model. The value 'collapse' selects the collapsing borders model. The models are described below.
Quirks Mode and IE7 Mode (All Versions)
The table and inline-table elements are not supported.