All the dimensions are in percentage widths so the layout adjusts to any screen resolution. Vertical dimensions are not set so they stretch to the height of the content.
The extreme dilutions expected at the introduction of organic compounds in the terrestrial hydrosphere makes it necessary to identify natural means for concentration; these also need to be selective. As an effective process in this respect, we are studying charge selective sorption on surface-active minerals. In this way, it has been possible, in model experiments, to raise the concentration of molecular ions such as glycolaldehyde phosphate, ferrocyanide, and oligophosphates, from 10 exp-5M in natural solutions to the order of 10 M in the sorbed interlayer solution in bilateral surface-active minerals.
I've colour coded each div so it's easy to see:
The header, colmask and footer divs are 100% wide and stacked vertically one after the other. Colleft is inside colmask. The two column content divs (col1 & col2) are inside colleft. Notice that the main content column (col1) comes before the side column.
The CSS used for this layout is 100% valid and hack free. To overcome Internet Explorer's broken box model, no horizontal padding or margins are used. Instead, this design uses percentage widths and clever relative positioning.
The higher up content is in your page code, the more important it is considered by search engine algorithms (see my article on link source ordering for more details on how this affects links). To make your website as optimised as possible your main page content must come before the side columns. This layout does exactly that: The the right-hand main page comes first, then the left column (see the nested div structure diagram for more info). The columns can also be configured in the opposite order if required.
In this layout the background colours of each column will always stretch to the length of the longest column. This feature was traditionally only available with table based layouts but now with a little CSS trickery we can do exactly the same with divs. Say goodbye to annoying short columns! You can read my article on equal height columns if you want to see how this is done.
This layout requires no images. Many CSS website designs need images to colour in the column backgrounds but that is not necessary with this design. Why waste bandwidth and precious HTTP requests when you can do everything in pure CSS and XHTML?
JavaScript is not required. Some website layouts rely on JavaScript hacks to resize divs and force elements into place but you won't see any of that nonsense here.
This layout is fully compatible with resizable text. Resizable text is important for web accessibility. People who are vision impaired can make the text larger so it's easier for them to read. It is becoming increasingly more important to make your website resizable text compatible because people are expecting higher levels of web accessibility. Apple have made resizing the text on a website simple with the pinch gesture on their multi-touch trackpad. So far this trackpad is only available on the MacBook Air but it will soon be rolled out to all of their systems. Is your website text-resizing compatible?
This layout does not require the XML declaration for it to display correctly in older versions of Internet Explorer.
Only one stylesheet is used with this layout This means that IE conditional comments are not needed to set extra CSS rules for older versions of Internet Explorer.
This left menu Layout has been tested on the following browsers:
The HTML in this layout validates as XHTML 1.0 strict.
That's right, design your own website.
This layout is fully compatible with cross-browser compatible centered menus.