All the content on the page must be included in a landmark.Identify regions of the page with HTML5 sectioning elements or ARIA landmark ARIA role attributes. Landmarks(page regions), enable screen reader users to identify and navigate directly to important sections of a web page, skipping over blocks of content.
Provide link text that identifies the purpose of the link without needing additional context. If the link text is not self-descriptive, and the link context describes the link purpose. Links must have visual indicators to enable users to quickly identify them and colour must not be the only means of differentiating a link from regular text. For more information click here
For informative images, provide meaningful text alternatives such as use the alt attribute on the <img> element that serve the equivalent purpose to convey the intent, purpose and meaning of the image. Use "null" alt attributes (alt="") to hide decorative or redundant images from assistive technology. For more information click here