CSS is an indispensable part of the web design process. By adding styles, you can achieve web beautification, layout, interactive behavior and other effects. The css language is flexible and changeable, and different visual effects can be achieved through different attributes and their corresponding values. So, how many styles does CSS have? This article will take an in-depth look at the different styles of CSS.
1. Inline style
Inline style is a way to define the style directly in the HTML tag. Add the "style" attribute to the tag, and then add the CSS style attributes and their corresponding values to the attribute to set the style. For example:
<h1 id="这是一段红色文字">这是一段红色文字</h1>
The advantage of inline styles is that they are simple and easy to implement, and you can quickly set styles on individual elements. However, if multiple elements need to be styled identically, inline styles are cumbersome and difficult to maintain because the entire style can only be modified within the HTML document.
2. Embedded styles
Embedded styles use the
<head>
<style>
h1 {
color: red;
}
</style>
</head> Embedded styles can style the entire website page. Just add CSS rules in the
tag to achieve global style control. Compared with inline styles, embedded styles are more flexible and can be styled for different HTML elements.However, embedded styles also have their disadvantages. As your website grows in size, embedded styles can become difficult to maintain. When the style needs to be modified, each HTML page containing the embedded style needs to be modified, which is very cumbersome.
3. External style
External style refers to separating the CSS style from the HTML document and existing it in the form of an independent file. By pointing to the CSS file with the tag, you can implement style reference. For example:
<head>
<link rel="stylesheet" href="style.css">
</head>Containing CSS style rules in the style.css file can define the style of the entire site, so that the style and content of the page can be separated, and it is very convenient to modify. References to external styles are the recommended way to style. Its advantages are that it is easy to manage, can easily style the entire website, and is very convenient to modify.
Summary:
CSS styles have different implementation methods, each with its own advantages and disadvantages. Inline styles are simple and convenient, but not easy to maintain; embedded styles are more flexible, but when the size of the website gradually increases, maintenance becomes more difficult; external styles are easy to manage and easy to modify, and are the recommended style setting methods.
No matter which style setting method you choose, you need to pay attention to the standardization and uniformity of the style. When writing CSS styles, browser compatibility should be fully considered to avoid inconsistent rendering in different browsers. At the same time, you should follow the relevant specifications of CSS styles, maintain a good code style, and make the code structure and style beautiful and consistent.
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