How do I show the grid in inspect?
When an HTML element on your page has display: grid or display: inline-grid applied to it, you can see a grid badge next to it in the Elements panel. Clicking the badge to toggle the display of a grid overlay on the page.
Which browser does not support grid layout?
The supporting browsers
Other than in Internet Explorer, CSS Grid Layout is unprefixed in Safari, Chrome, Opera, Firefox and Edge. Support for all the properties and values detailed in these guides is interoperable across browsers.