Bug 29528 – "border-collapse: collapse;" tables with unnecessary colspans draw screwey borders
Safari – WebKit Browsers Rendering Problem for Table Depending on colspan – Stack Overflow
HTML, CSS and tables – the beauty of data (includes accessibility info and links)
Techniques for Accessible HTML Tables (extensive article)
Comparison of layout engines – Cascading Style Sheets)
Trident: 8.0
Gecko: 1.0
WebKit: 125
KHTML: All
Presto: 1.0
Prince XML: 5.1
Trident: 8.0
Gecko: 1.0
WebKit: 125
KHTML: All
Presto: 1.0
Prince XML: 6.0
Trident: 8.0
Gecko: 1.4
WebKit: 85
KHTML: All
Presto: 1.0
Prince XML: 5.0
Trident: 5.0
Gecko: 1.8
WebKit: 125
KHTML: All
Presto: 1.0
Prince XML: 6.0
Trident: 8.0
Gecko: 1.0
WebKit: 125
KHTML: All
Presto: 1.0
Prince XML: 5.0