《css秘籍》-第七章-上(margin、padding)_html/css_WEB-ITnose
- padding是指与其边框线之间的空间
- border是指盒子周边的直线
- background-color是用来填充边框内部空间的
- margin是指一个标签和另外一个标签之间的间隔。
默认是这样的,但是由于不同的浏览器会给相同的标签提供不同的padding和margin,因此最好将所有标签的padding和margin都置零
用margin和padding控制空间
padding是在内容和边框之间增加空间,padding占用的空间也可以为空白内容,但他仍然会填满背景色或者图片,margin则是在元素之间增加空白,所有有时候看到增加margin之后,会多了空白的沟槽。
margin可以用百分比进行布置,例如
< !DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"/> <title></title> <style> .test1{ margin-left: 20%; margin-right: 20%; width: 500px; height: 500px; border: solid; } </style></head><body><div class="test1"></div></body></html>
假设这个div就是在html的body的一个div,这样的话这个div会始终保持增加距离浏览器左边%20的间距和距离浏览器右边%20的间距。这种做法很适合在做一些适配浏览器尺寸的操作。
margin和padding可以使用快捷属性:
例如
margin: 0 10px 20px 30px;
这个配置的参数从左到右是,上边,右边,下边,左边的margin。
快捷方式很方便设置4个方向的值。
边距冲突
当元素的margin-bottom碰到另外一个元素的margin-top的时候,浏览器并不是将他们相加,而是应用他们中较大的一个。这时候就会很奇怪,所以应该使用padding-top或者padding-bottom。
margin负值
margin的正值是增加元素之间的空间,而负值是移除他们之间的空间。所以通过设置margin的负值可以很简单的将元素移动到想要的位置。
未经允许不得转载:神一样的少年 » 《css秘籍》-第七章-上(margin、padding)

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.

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

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

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
