What are the layout requirements for flexible space?

The layout of flexible space requires container attributes, sub-element attributes, order adjustment, space allocation, etc. Detailed introduction: 1. Container attributes. Flexible space layout requires container elements to have enough space to accommodate sub-elements. Container attributes such as flex-direction, flex-wrap, flex-flow, justify-content, align-items and align-content can be used. Control the arrangement and distribution of sub-elements in the container; 2. Sub-element attributes, etc.

Operating system for this tutorial: Windows 10 system, Dell G3 computer.

Flexible Space is a concept in Flexible Box Layout, which represents the unoccupied space in the container. Flexible space can be allocated automatically or manually. The layout requirements of flexible space are as follows:

Container attributes:

Flexible space layout requires that the container element (that is, the element with display: flex or display: inline-flex set) has enough space to accommodate child element. Container properties such as flex-direction, flex-wrap, flex-flow, justify-content, align-items and align-content can control the arrangement and distribution of child elements in the container.

Sub element attributes:

Flexible sub elements need to set some specific attributes, such as flex-grow, flex-shrink, flex-basis, order, flex, etc., in order to respond to container attribute changes. Implement adaptive layout.

Order adjustment:

Flexible space layout allows developers to easily adjust the display order of elements on the page without modifying the HTML structure. By adjusting the order attribute of child elements, you can change the order in which they appear in the container.

Space allocation:

Flexible space layout can precisely control the space allocation of elements in the container. The container properties justify-content and align-items can control the space allocation of child elements on the main axis and cross axis respectively. By setting the flex-grow, flex-shrink and flex-basis properties, you can control the space allocation of child elements in different situations.

To sum up, flexible space layout requires that the container has enough space to accommodate sub-elements, and sub-elements need to set specific attributes in response to container attribute changes, allowing developers to adjust the display order and space allocation of elements. This layout method is widely used in modern web development because it can achieve simple, flexible, and responsive page layout.

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