:before and :after

Overflow

box

Hello_Overflow

This is a very loooooooooooooooooooooooooooooong word. The first step to start using Flexbox is to create a flex container. Children of a flex container are called the flex items, and are laid out inside the flex container using the Flexbox properties. Some of the Flexbox properties apply to the container, others are applied to the flex items.