What is the difference between inline elements and block-level elements?

The differences between inline elements and block-level elements include five differences: "box model", "arrangement", "content display", "relative position" and "default size": 1. Inline elements are not independent The width and height of the box are determined by the content, while block-level elements will generate an independent rectangular box, and attributes such as width, height, margins, and padding can be set; 2. Inline elements are arranged horizontally on the same line, while block-level elements It will be arranged in order from top to bottom; 3. Inline elements cannot contain block-level elements, while block-level elements can contain other block-level elements and inline elements.

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

Inline elements and block-level elements are two common element types in HTML. They have some differences in layout and display.

1. Box model: Block-level elements will generate an independent rectangular box, which will occupy the width of a whole line. You can set attributes such as width, height, margins, and padding. Inline elements do not generate independent boxes. Their width and height are determined by the content, and the width and height cannot be set directly.

2. Arrangement method: Block-level elements will be arranged in order from top to bottom, with each block-level element occupying its own row. Inline elements will be arranged horizontally on the same line, and will not wrap until one line cannot fit.

3. Content display: Block-level elements can contain other block-level elements and inline elements, and can set the layout and style of internal elements. Inline elements generally cannot contain block-level elements and can only contain text or other inline elements.

4. Relative position: Block-level elements have obvious boundaries and can use CSS positioning properties (such as position, top, left) to control their relative position. Inline elements usually cannot set these properties, and they will automatically adjust their position according to the text flow layout.

5. Default size: The default width of block-level elements is 100%, which will occupy the available space of the parent element. The default width of inline elements is determined by the content, and generally only takes up the width required by the content.

It should be noted that the default type of an element can be changed through the display attribute of CSS, by setting block-level elements to inline elements, or setting inline elements to block-level elements, thereby changing The way they are displayed and laid out.

The above is the detailed content of What is the difference between inline elements and block-level elements?. For more information, please follow other related articles on the PHP Chinese website!