what is the difference between flex and grid code example

Example 1: css grid vs flexbox

/* Answer to: "css grid vs flexbox" */

/*
  Grid is much newer than Flexbox and has a bit less browser
  support. That’s why it makes perfect sense if people are
  wondering if CSS grid is here to replace Flexbox.

  To be exact:
  1. Grid can do things Flexbox can’t do.
  2. Flexbox can do things Grid can’t do.
  3. They can work together: a grid item can be a flexbox container.
  A flex item can be a grid container.

  For more information on this topic, go to:
  https://css-tricks.com/css-grid-replace-flexbox/
*/

Example 2: css grid vs flexbox

/* Both flexbox and grid are based on this concept. 
Flexbox is best for arranging elements in either a single row, 
or a single column. Grid is best for arranging 
elements in multiple rows and columns. 
The justify-content property determines how the extra space of the 
flex-container is distributed to the flex-items. */