A flex container extends things to occupy accessible free space or therapists them to forestall flood. Above all, the flexbox design is heading rationalist rather than the normal formats (square which is vertically-based and inline which is on a level plane based). flex set the display property to designs a flexbox container.The property is the shading bit of this affirmation. It directs which part of the selector will be changed outwardly. The worth is the thing that the picked CSS property will be changed to. In our model, we are utilizing the hex estimation of #000, which is CSS shorthand for "dark."