css学习笔记一_html/css_WEB-ITnose
1、在css开头用* {margin:0;padding:0;}可以清除所有样式
2、在css中table,th,td {padding:0;}效果等同于cellpadding="0″.
3、在css中table {border-spacing: 0;}效果等同于cellspacing="0".
但是在IE6中不支持,故使用类似的table{border-collapse: collapse;}。注意:只是类似。
4、在用table拼接切片图片的时候,以下css可以解决图片间隙问题
table{width: 990px;height: 100%;line-height: 0;border-collapse: collapse;/*等同于cellspacing="0"*/padding:0;border:0;}th,td { padding: 0; }
5、若是用div拼接图片,可以使用div {vertical-align:top;outline-width:0;}解决上下间隙问题
6、子元素使用margin-top时,父元素背景图片下沉,可以使用以下方法解决。
(1)、给父元素的添加padding-top: 1px;
(2)、给子元素添加float属性
(3)、父元素添加position:relative;子元素添加position:absolute;
(4)、父元素添加border-top: 1px solid #fff;

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

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,

The article discusses using HTML5 form validation attributes like required, pattern, min, max, and length limits to validate user input directly in the browser.

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

Article discusses best practices for ensuring HTML5 cross-browser compatibility, focusing on feature detection, progressive enhancement, and testing methods.

The article discusses the HTML <datalist> element, which enhances forms by providing autocomplete suggestions, improving user experience and reducing errors.Character count: 159

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

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

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
