The top four lines are required if you are coding in XHTML and want to validate. Copy and paste them as the top four lines in the code you are writing.

If you have a URL for the web page you are checking, use the tab for Validate by URL. If you want to check code from your computer use the tab for Validate by File Upload (currently showing) and browse for the file. Then click on Check.

This is the code that I am going to check.

You can see the code at that address validated strict.

This shows just two lines of code for XHTML - this shows an earlier version - we now use the four lines shown in a previous slide. This page will not validate because the statement This is my first XHTML page is not in a container like a paragraph or a division.

Again, you should use four lines of code. The problem with this page is the paragraph was not closed.

Shows a page with a simple header.

Shows a page with a series of headers.

Shows an unordered list.

Shows an ordered list.

Note the spaces do not show on the page - it defaults to showing just one space.

I can use to show a single space.

See the repeated to show multiple spaces.

You should use when you want a break.

means that you must close the inner first so close and then

Validates transitional which means it does not meet the standards for stict.

The use of. It validates strict.

The HTML vs XHTML way to set up an outline or to set up different notations in an ordered list.

have conflicting means. To print it is best to use < and >

This shows another kind of list - a definition list.

gets the predefined look.

Shows divisions and paragraphs.