What is the difference between css

CSS (Cascading Style Sheets) is an important part of front-end development, which can make web pages more beautiful and easier to read. But for those who are just starting to learn front-end, they may be confused by some terms in CSS. This article will introduce some common terms in CSS and the differences between them.

1. CSS selectors and CSS properties

CSS selectors and CSS properties are two important components of CSS. CSS selectors are used to select HTML elements to which styles are applied, while CSS properties are used to style an element. The difference between CSS selectors and CSS properties is what they do. CSS selectors are used to locate HTML elements, while CSS properties are used to specify the styles to be applied to HTML elements.

2. class and id

class and id are two common identifiers in CSS selectors. Class is used to identify a group of elements, while id is used to identify a unique element. The difference between class and id lies in their application scenarios. class applies to a group of elements, while id applies to a unique element. When setting the same style for multiple elements, using class is a better choice; and when you need to set the style for a single element, using id is more appropriate.

3. Padding and Margin

Padding and Margin are two common properties in CSS. Padding refers to the distance between the interior of the element and its border, while margin refers to the outer margin of the element, that is, the distance between the element and adjacent elements. The difference between Padding and Margin is what they do. Padding is used to control the distance between the internal content of an element and its border, while margin is used to control the distance between an element and adjacent elements.

4. Absolute and Relative

Absolute and Relative are two common positioning methods in CSS. Absolute is a form of absolute positioning that positions an element relative to its nearest positioned ancestor. Relative is a relative positioning method, which positions the element relative to its original position. The difference between Absolute and Relative is their reference point. Absolute refers to the positioned ancestor element, while Relative refers to the original position of the element.

5. Inline and Block

Inline and Block are two important display modes in CSS. Inline is an inline mode that causes elements to appear within a row and automatically adjust their width based on the content. Block is a block mode that causes elements to start on a new line and occupy the entire available width. The difference between Inline and Block is how they are laid out. Inline layout is suitable for some text or inline elements, while Block layout is suitable for some large elements.

In general, there are many terms and attributes in CSS, and the differences between them can be summarized as differences in functions and application scenarios. Understanding the differences between these terms and properties allows front-end developers to better understand how CSS works and apply them more efficiently.

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