Accessibility and usability are essential aspects of user-friendly UX designs, which means they must be easy to access and use by people with different abilities, preferences, or situations. To ensure your designs are accessible and usable on different devices, you should use clear and concise language that avoids jargon, slang, or abbreviations. Contrast, color, and font size should also be used to enhance readability and visibility. Labels, icons, and buttons should indicate the purpose and functionality of your elements; however, elements should not be too small, too close, or too similar to each other. Keyboard, mouse, touch, and voice inputs should be used to support different modes of interaction; however, inputs that are incompatible or inaccessible with certain devices or users should be avoided. Finally, feedback such as sounds, animations, or messages should be used to inform users about the status and outcome of their actions; however, feedback that is too subtle, too intrusive, or too distracting should be avoided.