The shorthand you often see in tutorials is flex: 1 or flex: 2 and so on. This is as if you used flex: 1 1 0 or flex: 2 1 0 and so on, respectively. The items can grow and shrink from a flex-basis of 0. tl;dr - We don't provide testing for attributes that works over single item basis. What is the :after placeholder?

If I were to work in Arabic, then the start edge of my main axis would be on the right and the end edge on the left. There are also some predefined shorthand values which cover most of the use cases. You will often see these used in tutorials, and in many cases these are all you will need to use. The predefined values are as follows:The justify-content property is used to align the items on the main axis, the direction in which flex-direction has set the flow. The initial value is flex-start which will line the items up at the start edge of the container, but you could also set the value to flex-end to line them up at the end, or center to line them up in the center. Setting flex: initial resets the item to the initial values of flexbox. This is the same as flex: 0 1 auto. In this case the value of flex-grow is 0, so items will not grow larger than their flex-basis size. The value of flex-shrink is 1, so items can shrink if they need to rather than overflowing. The value of flex-basis is auto. Items will either use any size set on the item in the main dimension, or they will get their size from the content size. An area of a document laid out using flexbox is called a flex container. To create a flex container, we set the value of the area's container's display property to flex or inline-flex. As soon as we do this the direct children of that container become flex items. As with all properties in CSS, some initial values are defined, so when creating a flex container all of the contained flex items will behave in the following way. The live example below allows you to test out the different values of the flex shorthand; remember that the first value is flex-grow. Giving this a positive value means the item can grow. The second is flex-shrink — with a positive value the items can shrink, but only if their total values overflow the main axis. The final value is flex-basis; this is the value the items are using as their base value to grow and shrink from. You can read more about the relationship between flexbox and the Writing Modes specification in a later article; however, the following description should help explain why we do not talk about left and right and top and bottom when we describe the direction that our flex items flow in.

If we have three 100 pixel-wide items in a container which is 500 pixels wide, then the space we need to lay out our items is 300 pixels. This leaves 200 pixels of available space. If we don't change the initial values then flexbox will put that space after the last item. The flex-wrap property is set to nowrap. This means that the flex items will always remain in a single row or column, overflowing their container if their combined width/ height exceeds the containing element width/ height. Using flex: auto is the same as using flex: 1 1 auto; everything is as with flex:initial but in this case the items can grow and fill the container as well as shrink if required. If the flex-direction is row and I am working in English, then the start edge of the main axis will be on the left, the end edge on the right.

Today I’m sharing the details on my new FLEX tool boxes, plus more exciting equipment. FLEX Tool Boxes & More In both cases the start edge of the cross-axis is at the top of the flex container and the end edge at the bottom, as both languages have a horizontal writing mode. To have more control over flex items we can target them directly. We do this by way of three properties: