When it comes to achieving cross-browser compatibility, there are several techniques that developers can employ to ensure a consistent user experience across different browsers. Let's explore some of these techniques:

1. Progressive Enhancement: Progressive enhancement is an approach to web development that focuses on creating a basic functionality and design that works on all browsers, and then gradually adding more advanced features for browsers that support them. This technique allows websites to be accessible and usable on older browsers while providing enhanced experiences for modern ones.

2. Graceful Degradation: Graceful degradation is the opposite of progressive enhancement, where developers start with a fully-featured website and then remove or replace certain features to make it work on older browsers. By providing fallback options for unsupported features, graceful degradation ensures that the website remains usable even on less capable browsers.

3. Vendor Prefixes: Some CSS properties and JavaScript APIs may have different implementations or may not be supported at all by certain browsers. In such cases, developers can use vendor prefixes to specify different versions of a property or method specific to a particular browser. For example, '-webkit-' is a prefix commonly used for properties specific to the WebKit browser engine used in browsers like Chrome and Safari.

Using these techniques can go a long way in achieving cross-browser compatibility and ensuring that your website works seamlessly across different browsers and their versions.