Sandeep's Tech and Design Blog

caniuse.com is one the website you want to use to see if a CSS, HTML or Javascript feature is implemented in which version of the browser. Example CSS grid support in caniuse

One of the best comprehensive guides to CSS Flexbox CSS Flexbox are very useful for designing responsive web applications that adjust the layout based on the device i.e from a large desktop monitor to a smart phone. You can test the layout in Chrome by launching the Chrome Debugger and then changing the Device on the top left which will then launch a toolbar on your page that will let you flip through different devices such as iPad, iPhone X and so on.