块套块的排版问题研究_html/css_WEB-ITnose-HTML Tutorial-php.cn

Home

Web Front-end

HTML Tutorial

块套块的排版问题研究_html/css_WEB-ITnose

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Jun 24, 2016 am 11:20 AM

div内嵌套p,div等元素出现的问题

文章内有些问题，可能不适应今天了。

正在学习前端，小问题是不能忽视的。

 1 <!DOCTYPE html> 2 <html> 3  <head> 4   <title> new document </title> 5   <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 6   <style type="text/css"> 7     div {margin:0;padding:0;} 8      9     /*解决方案1？：加个border可以让外部div变大，但是border的1px，用margin=-1px消除不了        border:1px solid #000;margin:-1px;               */10     #top,#bottom {background:red;}11     #bottom{background:green;}12     13     p{margin:20px;}14     #div {margin:30px;}15     16     /* 此时margin为0，效果OK             */  17     /* 接下来先去掉p标签的margin:0;让前面的定义生效            18     p{margin:0px;}    */   19     #div {margin:0;}20     21     /*解决方案2：*/22     #top {  23     overflow:hidden; /* 针对FF，Opera有效 */  24     zoom:1; /* 对IE有效 */  25 }             26 27   </style>28  </head>29 30  <body>31  32   <div id="top">33     <p>p-tag margin</p>34   </div>35   36   <div id="bottom">37     <div id="div">div margin</div>38   </div>39   40  </body>41 </html>

解决方案1是有问题的，margin:-1px;并不能解决高度增大问题，chrome,FF,Opara测试了下都不行。

解决方案2，可以完美解决（IE我没测试）。

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

What is the difference between an HTML tag and an HTML attribute?May 14, 2025 am 12:01 AM

HTMLtagsdefinethestructureofawebpage,whileattributesaddfunctionalityanddetails.1)Tagslike,,andoutlinethecontent'splacement.2)Attributessuchassrc,class,andstyleenhancetagsbyspecifyingimagesources,styling,andmore,improvingfunctionalityandappearance.

The Future of HTML: Evolution and TrendsMay 13, 2025 am 12:01 AM

The future of HTML will develop in a more semantic, functional and modular direction. 1) Semanticization will make the tag describe the content more clearly, improving SEO and barrier-free access. 2) Functionalization will introduce new elements and attributes to meet user needs. 3) Modularity will support component development and improve code reusability.

Why are HTML attributes important for web development?May 12, 2025 am 12:01 AM

HTMLattributesarecrucialinwebdevelopmentforcontrollingbehavior,appearance,andfunctionality.Theyenhanceinteractivity,accessibility,andSEO.Forexample,thesrcattributeintagsimpactsSEO,whileonclickintagsaddsinteractivity.Touseattributeseffectively:1)Usese

What is the purpose of the alt attribute? Why is it important?May 11, 2025 am 12:01 AM

The alt attribute is an important part of the tag in HTML and is used to provide alternative text for images. 1. When the image cannot be loaded, the text in the alt attribute will be displayed to improve the user experience. 2. Screen readers use the alt attribute to help visually impaired users understand the content of the picture. 3. Search engines index text in the alt attribute to improve the SEO ranking of web pages.

HTML, CSS, and JavaScript: Examples and Practical ApplicationsMay 09, 2025 am 12:01 AM

The roles of HTML, CSS and JavaScript in web development are: 1. HTML is used to build web page structure; 2. CSS is used to beautify the appearance of web pages; 3. JavaScript is used to achieve dynamic interaction. Through tags, styles and scripts, these three together build the core functions of modern web pages.

How do you set the lang attribute on the tag? Why is this important?May 08, 2025 am 12:03 AM

Setting the lang attributes of a tag is a key step in optimizing web accessibility and SEO. 1) Set the lang attribute in the tag, such as. 2) In multilingual content, set lang attributes for different language parts, such as. 3) Use language codes that comply with ISO639-1 standards, such as "en", "fr", "zh", etc. Correctly setting the lang attribute can improve the accessibility of web pages and search engine rankings.

What is the purpose of HTML attributes?May 07, 2025 am 12:01 AM

HTMLattributesareessentialforenhancingwebelements'functionalityandappearance.Theyaddinformationtodefinebehavior,appearance,andinteraction,makingwebsitesinteractive,responsive,andvisuallyappealing.Attributeslikesrc,href,class,type,anddisabledtransform

How do you create a list in HTML?May 06, 2025 am 12:01 AM

TocreatealistinHTML,useforunorderedlistsandfororderedlists:1)Forunorderedlists,wrapitemsinanduseforeachitem,renderingasabulletedlist.2)Fororderedlists,useandfornumberedlists,customizablewiththetypeattributefordifferentnumberingstyles.

See all articles