The automatic code generation of Web User Interfaces (UIs) promises to be a revolutionary step in the digital landscape, bridging the gap between design and development. This technology involves extracting source code from a website's visual representation. It makes website creation more accessible, removing any coding knowledge requirement. This process is non-trivial due to the intrinsic nature of HTML/CSS languages. The complex interactions between code and graphic elements enable multiple ways to achieve the same visual result. Moreover, a single line of code can significantly influence the appearance of numerous components or the entire website. Recently, deep neural network models, particularly transformer-based ones, have demonstrated their ability to process and understand long texts without losing the overall meaning.