To colour within the lines, the designer needs to fully understand what the dev limitations are, which are often complex to summarize and a moving target. How d

To colour within the lines, the designer needs to fully understand what the dev limitations are, which are often complex to summarize and a moving target. How do you easily explain what CSS can do natively in most browsers for example? Often I see designers work in isolation to get something signed off for development and then the developer gets lumped with coding it however tricky it might be. My view is designers and developers need to iterate and work closely together from the very start to develop an understanding of what's practical and make compromises both ways vs it being a one way street.