CSS wouldn't be nearly as complicated if it weren't for the wide spectrum of browsers out there that you have to account for in your code, and even then, there are varying versions of each browser that users will commonly stick by before committing to an update. A contemporary reimagination of an old adage — "if it isn't broken, don't upgrade it" — has gripped many users of the web and resulted in some of the newer markups failing to render correctly on mobile and desktop platforms. Still, developers of highly popular sites have to account for deathbed browsers like Internet Explorer that still somehow find their way into a chunk of the user pie chart on a monthly basis.
The topic of CSS grids isn't hotly contended: They're a great addition for any site that needs to tabulate information smoothly. Although many sites seem to have problems with optimizing how it's rendered in every browser, for the most part, it promises a smooth and feature-rich experience to the compartmentalization of details on front pages, technical lists and stat layouts. Still, it's one of those CSS elements that tends to experience critical failure when faced with a slightly different browser version than accounted for. It has, for example, led many developers to use FlexBox backup elements for users of IE11.
Where other browsers aren't as problematic, it's still important to toss in @supports css query when integrating a CSS grid so the system can automatically determine whether a user's browser and version will cleanly support the highest functions of the site code. If you flake out on this detail, you run the risk of visitors encountering a broken, choppy or totally nonfunctional mess on arrival, and that's assuming the page will load to begin with. Unfortunately, 2018 still faces issues of this nature despite how far we've come with technology.
If you're looking to add a CSS grid to your production site, keep in mind that it's fairly common for major sites to do so and with good reason. Just remember that the feature can be temperamental for some of your visitors unless you implement fallbacks in your markups. For more information click here https://www.reddit.com/r/web_design/comments/8e7i7c/anyone_using_css_grid_in_a_production_site/.