Comment on Ask YC: What was the hardest thing to learn in HTML and CSS?Comments−rlm18yHow to make it look the same in IE (6, 7 and now 8), FF (2 and 3), Opera and Safari...−cstef18yI'm giving a second to the cross-browser compatibility.
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How to make it look the same in IE (6, 7 and now 8), FF (2 and 3), Opera and Safari...
I'm giving a second to the cross-browser compatibility.