Standards and compatibility
All the pages in the website fulfil the references XHTML 1.0 of the W3C or HTML 4.01, depending on the case. In every case the criteria of the semantic and structured markup have been observed to separate the structure when presenting the contents. The presentation of the contents of the websites has been developed fulfilling the references CSS 2 of the W3C. These standards guarantee the access to the information of the web through any device of navigation that follow the standards and references of the W3C.