DIV CSS learning summary_html/css_WEB-ITnose
DIV CSS is a WEB design standard, it is a web page layout method. Different from the traditional way of positioning through table layout, it can realize the separation of web page and presentation.
Because I have a lot of exposure to CSS in Beef and JS, now when I learn DIV CSS, it no longer feels strange, it is all resonance~~
No matter how you set it up CSS styles are indispensable for selector and style sheet.
Style Sheet
There are three main types of style sheets. They are embedded style sheets, external style sheets and inline style sheets respectively.
Embedded style sheet
Add a style sheet between the
tags in html.Example:
<head> <title>示例</title> <style type=”text/css”> #color{ font-color:red;}</style></head>Inline style sheet
Insert styles directly into html tags
Example :
<h1 style=“color:red”>示例<h1>
External style sheet
Create a new CSS file and insert it into the HTML code through the link statement.
Example:
<link type=”text/css” rel=”stylesheet” href=”css/示例.css”/>
Selector
There are three most commonly used selectors, namely ID selector, class selector and Tag selector.
ID selector
In HTML, you can add an ID to an element to determine the position of the element. At the same time, this ID must be unique and non-repeatable. You can set styles for tags by ID
Example:
Set an id called color for the p tag.
<p id=”color”>示例 </p>
Change the color of the content in the
tag through the CSS id selector.
#color{ font-color:red;}Class Selector
In HTML, you can add class attributes to tags and set attributes for tags through class.
Example:
Set a class called color for the p tag.
<p class=”color”>示例 </p>
Change the color of the content in the
tag through the CSS class selector.
.color{ font-color:red;}Tag selector
can change the style of the content in the tag according to the HTML tag.
Example:
Change the color of the text in the
tag
<p>示例</p>
Change the color of the text in the
tag through the tag selector
P{ color:red;}Summary
Selectors and style sheets are the most basic elements in CSS. Once you master these, you will be more comfortable when learning other things.
During the video learning, I also learned the comprehensive application of CSS and JavaScript, CSS and XML, and CSS and Ajax, but my mastery is not very good and more practice is needed to further deepen my understanding.
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
AI Hentai Generator
Generate AI Hentai for free.
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
Difficulty in updating caching of official account web pages: How to avoid the old cache affecting the user experience after version update?
Mar 04, 2025 pm 12:32 PM
The official account web page update cache, this thing is simple and simple, and it is complicated enough to drink a pot of it. You worked hard to update the official account article, but the user still opened the old version. Who can bear the taste? In this article, let’s take a look at the twists and turns behind this and how to solve this problem gracefully. After reading it, you can easily deal with various caching problems, allowing your users to always experience the freshest content. Let’s talk about the basics first. To put it bluntly, in order to improve access speed, the browser or server stores some static resources (such as pictures, CSS, JS) or page content. Next time you access it, you can directly retrieve it from the cache without having to download it again, and it is naturally fast. But this thing is also a double-edged sword. The new version is online,
How do I use HTML5 form validation attributes to validate user input?
Mar 17, 2025 pm 12:27 PM
The article discusses using HTML5 form validation attributes like required, pattern, min, max, and length limits to validate user input directly in the browser.
How to efficiently add stroke effects to PNG images on web pages?
Mar 04, 2025 pm 02:39 PM
This article demonstrates efficient PNG border addition to webpages using CSS. It argues that CSS offers superior performance compared to JavaScript or libraries, detailing how to adjust border width, style, and color for subtle or prominent effect
What are the best practices for cross-browser compatibility in HTML5?
Mar 17, 2025 pm 12:20 PM
Article discusses best practices for ensuring HTML5 cross-browser compatibility, focusing on feature detection, progressive enhancement, and testing methods.
What is the purpose of the <datalist> element?
Mar 21, 2025 pm 12:33 PM
The article discusses the HTML <datalist> element, which enhances forms by providing autocomplete suggestions, improving user experience and reducing errors.Character count: 159
What is the purpose of the <meter> element?
Mar 21, 2025 pm 12:35 PM
The article discusses the HTML <meter> element, used for displaying scalar or fractional values within a range, and its common applications in web development. It differentiates <meter> from <progress> and ex
What is the purpose of the <progress> element?
Mar 21, 2025 pm 12:34 PM
The article discusses the HTML <progress> element, its purpose, styling, and differences from the <meter> element. The main focus is on using <progress> for task completion and <meter> for stati
How do I use the HTML5 <time> element to represent dates and times semantically?
Mar 12, 2025 pm 04:05 PM
This article explains the HTML5 <time> element for semantic date/time representation. It emphasizes the importance of the datetime attribute for machine readability (ISO 8601 format) alongside human-readable text, boosting accessibilit
