Use of colour: The environmental statistics use colour to emphasize numbers and key points. Using colour cues to convey meaning can affect accessibility for users who are colour blind. This connects to the Perceivable principle because information shouldn’t only depend on visual colour elements for communication purposes, as this would not accommodate all audiences.

Links/buttons description: The links and navigation buttons are unambiguous. For example, here instead of using generic text such as "click here", the link is clearly labelled (“compare the models”), so the user knows exactly where it leads to. This applies the Understandable principle because the navigation becomes more predictable and doesn’t need further context. This is also helpful for screen readers mentioned in one of the module videos, as visually impaired users can navigate the website better through descriptive labels.

Expandable Information boxes for processing: The “+” symbols that allow users to expand sections under this topic help organize information into smaller pieces instead of having large walls of text that may cause cognitive overload. This applies the Understandable principle by allowing information to be easier to process. However, collapsible elements should still be accessible to keyboard only users. Additionally, the interactive hover effect on these boxes could be a minor issue for users who can’t use a mouse. This relates to the Operable principle which states that individuals with motor impairments or who rely on keyboards only for navigation should still be able to access all website functionality. In this case, however, the hover interaction serves more as a visual enhancement feature instead of a primary navigation feature.

Layout and contrast design for readability: There is clear contrast between the foreground text and background, making the information readable for users with vision problems or colour blindness. This applies the Perceivable principle because the content can be distinguished visually and read more easily. The balance between text and visuals also makes the page not feel cluttered.

Big headings/subheading and structured sections for navigation: The size of the headings are appropriate and are used to divide sections, making navigation accessible and reducing mental clutter. Users can quickly and easily locate relevant information without browsing through dense paragraphs. This highlights the Understandable principle because users don’t have to segregate information themselves, which would cause confusion and cognitive overload. For dyslexic users or those with ADHD, headings that stand out and section segregation makes information a lot easier to process.

Audio descriptions inclusion: Including English audio descriptions as an option in the linked video is an important accessibility feature because it verbally explains visual actions happening on screen through audio narration for users who are blind or have a visual impairment. For example, one of the visuals is explicitly described in detail as “the word hola enters the airpods and emerges as hello” to demonstrate the live translation feature. This connects to the Perceivable principle because information is made available in different sensory formats instead of being communicated solely through visuals, which wouldn’t be accessible to all audiences.