What is the main advantage of using HTML5 and CSS for web development?

The main advantage of using HTML5 and CSS for web development is that the website can be interpreted by any HTML5-compliant browser. This compliance is crucial for ensuring that web content is accessible and functions consistently across different environments. HTML5 introduces new semantic elements and features that enhance web interoperability and improve the overall structure of web pages. By adhering to HTML5 standards, developers can create websites that leverage new capabilities like audio, video embedding, and improved forms, while ensuring compatibility with a wide range of browsers.

Options relating to more complex tables, enhanced loading speeds of images, or reducing text volume do not fundamentally address the primary advantage of HTML5 and CSS. While those aspects can be relevant in specific contexts, the core benefit of using standardized and compliant web technologies revolves around universal interpretation and performance across diverse web environments.