CSS grid layout or CSS grid is a technique in CSS that allows web developers to create complex responsive web design layouts more easily and consistently across browsers. There-have-been other methods used webpage layout Previously Including tables , the box model , and CSS flex box . It is currently a W3C Candidate Recommendation . 
CSS grid layout can create more asymmetrical than previous grid and layout options like CSS floats . It also allows for more standardized code than works across browsers. This is in contrast to relying on specific hacks or complicated workarounds. 
One issue with using floats in CSS is if it is possible to get the most out of the page. This is due to the different heights for layout elements. 
As of October 2017, Chrome, Firefox, Safari, Edge and all CSS grid support without vendor prefixes.    web developers targeting older browsers can please use Modernizr 3.5.0 to detect and gracefully degrade the webpage as needed. 
Utilization in frameworks
There are no current web frameworks that imply CSS grid in contrast with CSS flex box which is used in such frameworks Bootstrap 4 and Foundation 6. 
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