Website design, like so many things is in a constant state of evolution. So many people are using cell phones and tablets in addition to, or in place of, their personal computer and websites have to be able to respond to not only the screen size, but if the device is rotated and what the resolution of the device is. Knowing that websites today need to be flexible and have the ability to adapt to changing situations, I write the code to be as flexible as possible. Many elements of the design are coded in a way that they can easily be swapped out with something else or be dynamic enough to fit into any design change. You could say the code is modular, or component based, and I spend the time up front to make sure the integrity of the code in each component is solid before moving on to the next design element.
A code of ethics is a set of principals and rules that govern decision making. Honesty, integrity and determination are among those principals. It's how I live my life, and it's how I write my code!