The CSS flexbox makes it easier to design flexible and responsive layouts without having to use the float system or postioning. The CSS flexbox is supported through all modern-day web browsers. The first step is designing the flexbox model.
The container becomes flexible by setting the display property to flex. The flex direction property defines which direction the container wants to stack the flex items. The flex-wrap property defines whether the flex items should or should not be wrapped.
One item of CSS flex items is child elements. They are of a flex container and automatically becomes a flex item. The order property specifies the order in which the flex items are positioned. The flex-grow property specifies how much of a flex item will grow in relation to the rest of the flex items.