HTML, CSS, Java script comments

While working on this blog, I have realized that there are at lest three different ways to insert a comment on a HTML web page.

1) HTML comments
<!--This is a comment. Comments are not displayed in the browser-->

The tricky part was to find out how to visualize this comment on the webpage, something that is not supposed to show-up! . The solutions comes down to this table

How to customize blogspot

Thanks to a very good friend of mine, Claudio Corsetti, I managed to make some changes to my blog layout

1) To make the main column wider just do this
#outer-wrapper { width: 1000px;}
#main-wrapper { width: 750px;}
#sidebar-wrapper { width: 220px;}