To create a Flex container, simply set the display property to flex or inline-flex. 1. Use display: flex to create a block-level container, and the child elements are arranged horizontally by default; 2. Use display: inline-flex to create an inline container, and the width is determined by the content; 3. You can control the layout by adjusting attributes such as spindle orientation, justify-content, and align-items, such as horizontal distribution and vertical centering.

To create a Flex container, it is actually very simple. You just need to set display property to flex or inline-flex in CSS. In this way, the element becomes an elastic container, and its children (that is, the "Flex Project") are automatically arranged in elastic layout.

Create block-level Flex containers with display: flex

The most common practice is to use display: flex . This will turn the container into a block-level element and its children will be arranged in the elastic box model.

 .container {
  display: flex;
}

After doing this, all direct child elements within .container will become "Flex items", which by default will be arranged in a row, from left to right. This method is suitable for horizontal arrangement such as navigation bar, button group, card list, etc.

Create inline Flex containers using display: inline-flex

If you want this container to occupy only the width required for its content, rather than filling the entire line, you can use inline-flex :

 .container {
  display: inline-flex;
}

This writing method is suitable for use in some embedded layouts, such as arrangements between form controls, or combinations of icon buttons on toolbars.

Pay attention to default behavior and commonly used adjustments

Although the layout has already taken effect after setting display: flex , you may also need to adjust the following properties as needed:

• Spindle direction : default is row (from left to right), or can be changed to column (from top to bottom)
• Alignment :
  • justify-content controls alignment on the spindle (such as center , space-between )
  • align-items controls alignment on cross axis (such as center )

For example, if you want all the children to be centered vertically and horizontally:

 .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

Basically that's it. Setting up display: flex is the first step to getting started with Flexbox layout. Although it is simple, it is very powerful. You can handle most layout scenarios by mastering a few key attributes.

The above is the detailed content of How do you create a flex container?. For more information, please follow other related articles on the PHP Chinese website!