Website designers are not responsible for writing code.

Another difference between web design and web development is that designers usually do not write code. Of course, there are exceptions — but generally speaking, designers aren’t held accountable for coding.

Consider a web designer's primary responsibilities. These include using an editor such as Photoshop to develop images, creating mockups, and designing layouts. However, coding is not involved in any of these tasks, so that’s where web development steps into the picture.
Alternatively, some companies opt to work with 'no code' website builders so designers can beautify the site and enhance the user experience without coding.