What does Validating HTML or CSS Mean?
For those who are unfamiliar with what validating a web page (ie validating your HTML or CSS code) means, it basically refers to using a program or an online service to check that the web page that you created is free of errors. In particular, an HTML validator checks to make sure the HTML code on your web page complies with the standards set by the W3 Consortium (the organisation that issues the HTML standards). There are various types of validators — some check only for errors, others also make suggestions about your code, telling you when a certain way of writing things might lead to (say) unexpected results. The W3 Consortium has its own online validator which you can use for free. It may be found at: http://validator.w3.org/ A CSS validator checks your Cascading Style Sheets in the same manner; basically, most will check them to make sure that they comply with the CSS standards set by the W3 Consortium. There are a few which will also tell you which CSS features are supported by w
