Hi guys. i need help with W3C validation errors

i have just created a blog with the name http://lamthachcaoohcm.com
now i checked and found that there were some problem in it, now i wan to fit it, but i wlould like get some good advise

You need to be more specific about what you want so that we can help you.

oh man, it was when i use w3c to chek and get 3 error that html

OK. I’ve changed the title of your topic to reflect that. (It always helps if you make your title as clear as possible.)

There are a few obvious errors I can see, which may be causing validation issues.

<meta property="fb:app_id" content="876174129096379" />
<meta property="fb:admins" content="2c03e19186d10b803c88413b8216bbd7"/>
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width" />

Those <meta> tags should all be inside the <head> section.

This declaration
<html lang="en-US" prefix="og: http://ogp.me/ns#">
is saying that the language of your page is US English, when it is, in fact, Vietnamese. That probably doesn’t worry the validator, but you should correct it.

And your meta keywords is ridiculously long and will not help you in any way. Google does not use it, and while other search engines may do, a list as long as that will simply make your site look Spammy. If you want to use that meta tag, then do it correctly, and just put the most important few key words for that page.

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