A summary of how to introduce css styles into the web
HTML and CSS are two languages with different functions. They affect a web page at the same time, so CSS and HTML must be linked together.
The two simplest ways are to introduce it directly in the html tag, or declare it in front of the html file. The following is a simple code example
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
p{background-color:red;
color: black}
</style>
<!--这里是修饰所有的P标签里面的内容，这是引入方法的一种-->
<style>
div{background-color:chartreuse;
color: coral}
</style>
</head>
<body>
<p style="background-color: aquamarine;color: black">Jay</p>
<!--在css里面，要用分号区别各种属性,虽然这个P标签有css样式，但是文本的样式是就近原则，这是最简单的css引入方式-->
<p>Bob</p>
<div>spider
<p>我是个P</p>
</div>
<!--div里面的P标签在上面有div的样式而没有P标签样式时，按div标签的样式，否则按P标签的样式-->
</body>
</html>The purpose of import and link is to An independent CSS file is introduced into the HTML file. The difference between the two is that the link type uses HTML tags to introduce external CSS files, while the import type uses CSS rules to introduce external CSS files.
Example of using a link to introduce an external CSS file:
<link href="~/Content/Base.css" rel="stylesheet" type="text/css" />
Example of using an import to introduce a CSS file:
<style type="text/css">
@import "/Content/Base.css"
</style>The difference in display effects between the two methods: using the link method , the CSS file will be loaded before loading the main part of the page, so that the displayed web page will have style effects from the beginning. When using the import method, the CSS file will be loaded after the entire page is loaded. For some browsers, in some cases, if the web page file is relatively large, an unstyled page will appear, which will flash for a while and then load again. The effect after setting the style appears. From a user experience perspective, this is a drawback of using import.
For some relatively large websites, in order to facilitate maintenance, you may want to write all CSS styles in several CSS files. In this way, if you use link import, you need several statements to import the CSS files separately. . If you want to adjust the classification of CSS files, you need to adjust the HTML files at the same time. This is a drawback for maintenance work. If you use the import method, you can only import a general CSS file, and then import other independent CSS files in this file.
If you only need to import one CSS file, use the link method; if you need to import multiple CSS files, first use the link method to introduce a "directory" CSS file, and then use import in this "directory" CSS file Import other CSS files.
But if you want to use JavaScript to dynamically decide which CSS file to import, you must use linking to achieve this.
The above is the detailed content of A summary of how to introduce css styles into the web. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
How to use bootstrap in vue
Apr 07, 2025 pm 11:33 PM
Using Bootstrap in Vue.js is divided into five steps: Install Bootstrap. Import Bootstrap in main.js. Use the Bootstrap component directly in the template. Optional: Custom style. Optional: Use plug-ins.
The Roles of HTML, CSS, and JavaScript: Core Responsibilities
Apr 08, 2025 pm 07:05 PM
HTML defines the web structure, CSS is responsible for style and layout, and JavaScript gives dynamic interaction. The three perform their duties in web development and jointly build a colorful website.
Understanding HTML, CSS, and JavaScript: A Beginner's Guide
Apr 12, 2025 am 12:02 AM
WebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.
How to write split lines on bootstrap
Apr 07, 2025 pm 03:12 PM
There are two ways to create a Bootstrap split line: using the tag, which creates a horizontal split line. Use the CSS border property to create custom style split lines.
How to set up the framework for bootstrap
Apr 07, 2025 pm 03:27 PM
To set up the Bootstrap framework, you need to follow these steps: 1. Reference the Bootstrap file via CDN; 2. Download and host the file on your own server; 3. Include the Bootstrap file in HTML; 4. Compile Sass/Less as needed; 5. Import a custom file (optional). Once setup is complete, you can use Bootstrap's grid systems, components, and styles to create responsive websites and applications.
How to insert pictures on bootstrap
Apr 07, 2025 pm 03:30 PM
There are several ways to insert images in Bootstrap: insert images directly, using the HTML img tag. With the Bootstrap image component, you can provide responsive images and more styles. Set the image size, use the img-fluid class to make the image adaptable. Set the border, using the img-bordered class. Set the rounded corners and use the img-rounded class. Set the shadow, use the shadow class. Resize and position the image, using CSS style. Using the background image, use the background-image CSS property.
How to use bootstrap button
Apr 07, 2025 pm 03:09 PM
How to use the Bootstrap button? Introduce Bootstrap CSS to create button elements and add Bootstrap button class to add button text
How to resize bootstrap
Apr 07, 2025 pm 03:18 PM
To adjust the size of elements in Bootstrap, you can use the dimension class, which includes: adjusting width: .col-, .w-, .mw-adjust height: .h-, .min-h-, .max-h-
