Dreamweaver lets you increase the magnification (zoom in) in the Document window so that you can check the pixel accuracy of graphics, select small items more easily, design pages with small text, design large pages, and so on.
Zoom in or out on a page
Edit a page after zooming
Select the Pointer tool (the pointer
icon) in the lower-right corner of the Document window, and click
inside the page.
Pan a page after zooming
Fill the Document window with a selection
Fill the Document window with an entire page
Fill the Document window with the entire width of a page