What does display mean in css

CSS (Cascading Style Sheets) is an integral part of front-end development and controls the style of web page elements. Among them, the display attribute is a very commonly used attribute in CSS, which is used to control the way elements are presented on the page.

The display attribute can have different values, the most commonly used ones include: block, inline and none.

block element:

The block element is usually used to create block elements on the page, such as paragraphs, titles, div containers, etc. The block element occupies its own line, and its width automatically fills the width of its parent container. The default attribute of the block element is display:block.

inline element:

The inline element is usually used to create a single inline element, such as text, icons, hyperlinks, etc. The width and height of inline elements can only be determined based on the content, and the width and height attributes do not take effect on them. Also, gaps are not automatically preserved between inline elements. The default attribute of inline elements is display:inline.

none element:

The none element is used to hide the element. After hiding, the element does not occupy any space on the page. That is, the none element will not occupy any position in the document flow, and neither the element nor its child elements will be displayed on the page. The default attribute of the none element is display:none.

In addition to the basic block, inline and none attributes, the display attribute can also be used to control some new layout methods of CSS3, such as flex, grid, etc.

flex layout method:

By default, elements are arranged from left to right according to the document flow, while flex layout method can arrange elements according to a certain proportion. By setting display:flex, sub-elements can be adaptively arranged according to a certain proportion, and the size, position, etc. of elements can be flexibly controlled.

grid layout method:

The grid layout method supports a table-like layout method. By setting display:grid, the parent container can be decomposed into several grids and filled with child elements. in the specified grid. By adjusting the size and position of the grid, complex layout effects can be achieved.

After mastering the basics of the display attribute, we can use this attribute to flexibly implement the page layout we need. At the same time, we need to understand the default value and value range of each attribute, as well as how the attributes are used in combination, in order to better optimize web page performance and user experience.

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