Validation Errors

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Does it matter if my site has validation errors?

I mean as i used the default text editor of my domain server, it generated some errors.How would you'al correct thi s please?

URL: view-source:http://mixcreations.me.uk//url]

 

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I don't know how the others feel, but I personally think that it's the last thing you should be worrying about right now.
Focus on getting a site that looks good and works how you want it to first.

Loads of people get hung up on putting markup validation logos all over their sites before they've even got anything worth seeing. Get the site done first, then validate it - if you really must.