Having someone code in Dreamweaver and also hand-code can cause many unforeseeable issues. If you have ever created a site in “DW”, you will notice that at the times there is extra code that is placed on the page. In many circumstances, this is compositely unnecessary code that can damage the structure of a site. This comes more into play when you get into jquery and php.
The safest way would be to make sure various versions of the code are saved so that if “DW” does add unnecessary code that crashes your page, your able to revert to a older copy. Back in the day when I tried using “DW” and good old notepad I came across issues where my site would break because a extra element was added or a wrong meta tag was automatically generated. I say be very careful and if you absolutely have to use “DW” along with manual coding, have the person doing the manual coding check back through the code for extras not needed. Have fun!
solved Manually coding then using dreamweaver [closed]