Finally, there is the <div>, the tag of all tags. When you run into a problem trying to fit things on the page where you want them, you will most likely solve it by inserting a number of <div> elements. Think of a <div> as a rectangular section of your page. You can even organize your page as a grid. The framework we will be using in the second half of the book is exactly that. It uses a 12-column grid.
Look at this very simple, yet not uncommon example:
<body> <div id="header"></div> <div id="container"> <div id="left"></div><div id="middle"></div><div id="right"></div> </div> <div id="footer"></div> </body>
Just make this the body of a new HTML page, minigrid.html, and look at it. You will see ... nothing, because none of the <div> elements have any content, in which case they do not have any size. <div> elements are so-called block elements. We will...