The blog post discusses the use of CSS writing modes for creating cross-browser compatible websites, particularly when dealing with languages like Mandarin that require vertical text orientation. It explains the differences between block-level and inline elements in CSS and introduces the CSS writing modes property, which allows for various text orientations such as vertical-rl, vertical-lr, horizontal-tb, and sideways configurations. The article highlights the challenges of browser compatibility, noting that while modern browsers like Google Chrome, Mozilla Firefox, and Safari support these properties, legacy browsers, including Internet Explorer, may not. The author suggests using LambdaTest, a cloud-based tool, for cross-browser testing to ensure website compatibility across different platforms and advises on creating contingency plans for unsupported browsers. Ultimately, the post underscores the importance of thorough testing to deliver a seamless user experience and encourages developers to consider using CSS writing modes for specific typography needs or multilingual website projects.