To ensure cross-browser compatibility for web applications, there are several best practices that can be followed:
1. Use standard HTML, CSS, and JavaScript: Stick to the industry standards to ensure consistent rendering across different browsers.
2. Test on multiple browsers and devices: Check how your web application performs on different browsers, operating systems, and devices to identify and fix any compatibility issues.
3. Implement a responsive design: Create a responsive layout that adapts to different screen sizes and resolutions.
4. Use feature detection: Instead of relying on browser-specific features or hacks, use feature detection libraries like Modernizr to ensure your application works across different browsers.
5. Polyfills and shims: Include polyfills and shims to add support for HTML5 and CSS3 features in older browsers.
6. Regularly update and maintain your code: Keep your code up to date with the latest web standards and security patches.
By following these practices, you can ensure that your web application works smoothly across different browsers.