Validating a website who is idina menzel dating
So if you write HTML code that has (say) the wrong order, the HTML validator will spot it and tell you.
However, it cannot catch errors of the second kind, where you get the spelling and order and all other technical aspects correct, but the code you used does not match the meaning you intended.
There are various types of HTML validators: some only check for errors, while others also make suggestions about your code, telling you when it might lead to (say) unexpected results.
The W3 Consortium has its own online validator which you can use for free.
Semantically, however, the sentence describes a different thing from what you meant.
HTML and CSS validators are designed to catch the first type of error, exemplified by the grammatical error of my first sentence.
But what happens if you write a sentence that says "Chris ate a pie" when you meant that he ate a sandwich?