Vostra Media tests sites and templates to ensure they comply with WAI accessibility standards to Level A conformance at time of sale. Should the Client request that Vostra Media alter the site or templates to meet specific WAI accessibility guidelines, or if updated WAI accessibility guidelines were introduced after the site or templates were sold to the Client, Vostra Media reserves the right to quote separately for any additional work needed. If the Client uses Drupal Themes or Modules, or other CMS systems that are not built by Vostra Media, the overall page may not meet WAI accessibility standards to Level A conformance. Vostra Media tests sites and templates to ensure they comply with W3C CSS standards as they are at time of sale. Should updated W3C CSS guidelines be introduced after the site or templates were sold to the Client, Vostra Media reserves the right to quote separately for any additional work needed. If the Client uses Drupal Themes or Modules, or other CMS systems that are not built by Vostra Media, the overall page may not meet W3C CSS standards. Vostra Media tests sites and templates to ensure they comply with W3C HTML standards as they are at time of sale. Should updated W3C HTML guidelines be introduced after the site or templates were sold to the Client, Vostra Media reserves the right to quote separately for any additional work needed.  If the Client uses Drupal Themes or Modules, or other CMS systems that are not built by Vostra Media, the overall page may not meet W3C HTML standards. Vostra Media shall make every effort to ensure sites are designed to be viewed by the majority of visitors. Sites are designed to work with the standard development platform, which includes recent versions of the main browsers, Internet Explorer and Mozilla Firefox. The Client agrees that Vostra Media cannot guarantee correct functionality with all browser software across different operating systems. The Client agrees that, following handover of files, any updated software versions of the browsers detailed in the standard development platform, including the browsers Internet Explorer and Mozilla Firefox, domain name set-up changes or hosting set-up changes thereafter may affect the functionality and display of their website. As such, Vostra Media reserves the right to quote for any work involved in changing the website design or website code for it to work with updated browser software, domain name or hosting changes. The Client agrees that more advanced applications on a website page may require a newer browser version or plug-in.