Adobe Illustrator is very different from others. It is resolution independent. Whenever you design layouts of web pages from Adobe than you have make them responsive so that they becomes resolution free and works independently. HTML/CSS are also needed to be making responsive for all screen sizes.
HTML is very effective language for designing. It is very different and unique. It is evolved from itself too much.Converting Adobe Illustrator design to HTML web pages is a task for professionals. Without knowledge of HTML/CSS you cannot convert it. Some designers also use tools for converting it but converting with tool can decrease quality of your code.
We at HawksCode Softwares Pvt. Ltd, UK are also converting it for designing of websites. Our designers are working on Adobe Illustrator to design documentation of web pages and then convert it to HTML layouts of websites. Our designers have expertise in it. We are working on it from a long time and our designs are unique
Adobe Illustrator is a best quality tool for designing. Some designers are still using Photoshop for designing but it also works same as it. It is same as PSD to HTML conversion. In this conversion text and images plays very important role,because a page contains mostly images and texts.Website designing has becomes an important part for every website. It is also growing rapidly.