www.wysiwygwebbuilder.com

WYSIWYG Web Builder is a What-You-See-Is-What-You-Get HTML generator, this means that the page will take up the same amount of pixels no matter what screensize, browser, resolution or DPI settings.
In Web Builder you have total control over the layout, unlike traditional HTML editors.
But this means that all objects are positioned absolute using CSS (on a fixed position), so you will be able to overlap objects. Overlapping would not be possible if the output was traditional (relative) HTML, because then the position of an object is based on the objects around it, which makes it much harder to design pages.
Now if objects were stretchable then the layout would be completely 'scrambled', because there is no relation between objects.

Tip:
Design all your pages to be centered in the browser for 800x600, just like the big companies do (Microsoft, Apple, Google ...).

Related topics:
Dynamic Web Page Lengths
viewtopic.php?t=4060

How do I center my page in the browser?
viewtopic.php?t=153

How is Web Builder different from a regular HTML editor?
viewtopic.php?t=138

A new feature in WYSIWYG Web Builder 6.1 allows you to stretch parts of a page. For advanced users only...
http://www.wysiwygwebbuilder.com/using_layers.html

Many websites use full width headers and footers to make it look like the page is stretching.

See this related FAQ article: 'How to add full width header and footer to your pages?''
viewtopic.php?t=32636

See also:
How to make sure websites look good in Mobile Browsers?
viewtopic.php?f=10&t=47727

WYSIWYG Web Builder 9 has several new options for designing 'responsive' websites.

Related tutorials:
http://www.wysiwygwebbuilder.com/anchored_layers.html
http://www.wysiwygwebbuilder.com/floating_layers.html

WYSIWYG Web Builder 10 now supports Responsive Web Design!

See this related FAQ for more information:
viewtopic.php?f=10&t=63817