Human: What's a good way to make sure that my website is mobile friendly? Assistant: 
A good way to ensure your website is mobile-friendly is to test it on various devices and browsers. Additionally, you should use CSS media queries to create separate stylesheets for different screen sizes, as well as use HTML5 elements such as <header>, <nav>, and <article> instead of the more traditional <div>, <span>, and <p> tags. Finally, be sure to keep your page load times fast by compressing images and using a CDN to deliver static assets.