在以前写html代码的时候,一般都会在head里添加重置样式reset.css,其内容如下:
@charset "utf-8";html, body, div, span, applet, object, iframe,h1, h2, h3, h4, h5, h6, p, blockquote, pre,a, abbr, acronym, address, big, cite, code,del, dfn, em, font, img, ins, kbd, q, s, samp,small, strike, strong, sub, sup, tt, var,b, u, i, center,dl, dt, dd, ol, ul, li,fieldset, form, label, legend,table, caption, tbody, tfoot, thead, tr, th, td { margin: 0; padding: 0; border: 0; outline: 0; font-size: 100%; /*background: transparent;*/}table { border-collapse:collapse; border-spacing:0;}fieldset, img { border:0;}address, caption, cite, code, dfn, em, strong, th, var { font-style:normal; font-weight:normal;}ol, ul { list-style:none; }caption, th { text-align:left; }h1, h2, h3, h4, h5, h6 { font-size:200%; font-weight:normal;}:focus { outline: 0;}a{ text-decoration:none;}a:hover img{ border:none;}a:active{noOutline:expression(this.onFocus=this.blur());}/*清除浮动*/.clearfix:after { content: "."; display: block; height: 0; clear: both; visibility: hidden;}.clearfix {display: inline-block;}/* Hides from IE-mac \*/* html .clearfix { height: 1%;}.clearfix {display: block;}/* End hide from IE-mac *//*png css hack for ie6*/*html img.png{ _background-image: expression(this.runtimeStyle.backgroundImage = "none",this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.src + "', sizingMethod='image')",this.src = "http://i0.itc.cn/20101019/848_0a785a7b_1118_4825_85dc_e8696988c94b_0.gif");}
但是最近在网上看了看网络文章,也感觉有些重置是没有用的。为什么呢?
重置的作用究竟是什么?
CSS reset的作用是让各个浏览器的CSS样式有一个统一的基准,而这个基准更多的就是“清零”!
有时候看到别人网站站的一些重置是这样的:
*{ margin:0; padding:0; }
这样的写法是极不推荐的。
现在来看重置表发现:
1. div标签默认有margin值吗?有padding值吗?怎么会想到应用div{margin:0; padding:0;}属性呢?答案肯定没有。
2. dt标签有默认的margin与padding值就是0,什么还要使用呢?
3. li标签默认有margin值吗?有padding值吗?没有!
4. code标签是个属于inline水平的元素,居然也扯到margin与padding的重置,没有必要。
5. fieldset, legend这两个90年代的标签你的网站上使用了吗?使用概率不足1%的标签也拿来重置,也没必要。
css真的重置也就那么几个常用的标签而已,你的页面一般都用到什么标签?
body, dl, dd, h1, h2, h3, h4, h5, h6, p, form{margin:0;} ol,ul{margin:0; padding:0;}
这样的CSS reset才是高效的,简洁的,其他一些标签都可以去掉的,没有必要。
当然css重置的优点,缺点都不说了,估计心里都非常有数的,还是要根据实际项目来。
后来主管给我推荐了一款替代reset.css重置的替代方案,那就是用Normalize.css。在后面文章里把它的用法等再列出来。
作者:风雨后见彩虹
出处:http://www.cnblogs.com/moqiutao/
如果您觉得本文对您的学习有所帮助,请多支持与鼓励。

WebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.

The role of HTML is to define the structure and content of a web page through tags and attributes. 1. HTML organizes content through tags such as , making it easy to read and understand. 2. Use semantic tags such as, etc. to enhance accessibility and SEO. 3. Optimizing HTML code can improve web page loading speed and user experience.

HTMLisaspecifictypeofcodefocusedonstructuringwebcontent,while"code"broadlyincludeslanguageslikeJavaScriptandPythonforfunctionality.1)HTMLdefineswebpagestructureusingtags.2)"Code"encompassesawiderrangeoflanguagesforlogicandinteract

HTML, CSS and JavaScript are the three pillars of web development. 1. HTML defines the web page structure and uses tags such as, etc. 2. CSS controls the web page style, using selectors and attributes such as color, font-size, etc. 3. JavaScript realizes dynamic effects and interaction, through event monitoring and DOM operations.

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.

HTML is suitable for beginners because it is simple and easy to learn and can quickly see results. 1) The learning curve of HTML is smooth and easy to get started. 2) Just master the basic tags to start creating web pages. 3) High flexibility and can be used in combination with CSS and JavaScript. 4) Rich learning resources and modern tools support the learning process.

AnexampleofastartingtaginHTMLis,whichbeginsaparagraph.StartingtagsareessentialinHTMLastheyinitiateelements,definetheirtypes,andarecrucialforstructuringwebpagesandconstructingtheDOM.

How to design the dotted line segmentation effect in the menu? When designing menus, it is usually not difficult to align left and right between the dish name and price, but how about the dotted line or point in the middle...


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

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

Dreamweaver Mac version
Visual web development tools

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

SublimeText3 Chinese version
Chinese version, very easy to use