search
HomeWeb Front-endHTML TutorialCSS: background-color/background-image_html/css_WEB-ITnose

Using CSS, you can specify a background image or background color for the html tag, and you can set the position of the image.

Code compiled from w3school: http://www.w3school.com.cn

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta http-equiv="Content-Language" content="zh-cn"><!--(1)设置背景颜色:background-color(2)设置背景图像:background-image(3)设置背景图像的重复:background-repeat(4)背景定位:background-position(5)背景关联:background-attachment-->  <style>    h1 {background-color:#afa}    h2 {background-color:rgb(255,187,187)}    div#bgImage       {      background-image:url(images/bg_image.jpg);      padding:10px;      }    div#bgImageKeywords      {      background-color:#ddd;      background-image:url(images/d_sikao.png);      padding:30px;      background-repeat:no-repeat;      background-position:left bottom;      }      div#bgImagePercent      {      width:400px;      background-color:#ddd;      background-image:url(images/d_sikao.png);      padding:40px;      background-repeat:no-repeat;      background-position:20% 80%;      }      div#bgImageOffset      {      width:400px;      background-color:#ddd;      background-image:url(images/d_sikao.png);      padding:40px;      background-repeat:no-repeat;      background-position:200px 20px;      }      div#bgImageAttach      {      background-image:url(images/bg_image.jpg);      padding:10px;      background-attachment:fixed;      }  </style><title>CSS 背景</title>  <h1 id="这是一个h-级别的标题-淡绿色">这是一个h1级别的标题:淡绿色</h1>  <h2 id="这是一个h-级别的标题-淡红色">这是一个h2级别的标题:淡红色</h2>  <h3 id="这是一个h-级别的标题-没有设定样式">这是一个h3级别的标题(没有设定样式)</h3>  <div id="bgImage">    <p>这个段落有背景图像,有内边距,允许重复(默认)</p>
<p>  </p>
</div>  <br>  <!--使用 关键字 描述背景图像的位置。位置关键字可以按任何顺序出现,只要保证不超过两个关键字:一个对应水平方向,另一个对应垂直方向。如果只出现一个关键字,则认为另一个关键字是 center。-->  <div id="bgImageKeywords">    <p>淡灰色背景色,同时有背景图像,不允许重复,背景图像居 左下方 显示</p>
<p>  </p>
</div>  <br>  <!--使用 百分比 描述背景图像的位置。百分比是图像相对于元素的位置(而不是整个浏览器窗口)。      如果只提供一个百分数值,所提供的这个值将用作水平值,垂直值将假设为 50%。这一点与关键字类似。-->  <div id="bgImagePercent">    <p>背景图像相对元素居 水平20%,垂直80% 显示</p>
<p>  </p>
</div>  <br>  <!--使用 偏移量 描述背景图像的位置。即图像的左上角与 background-position 声明中的指定的点对齐。-->  <div id="bgImageOffset">    <p>背景图像相对元素左上角的偏移量为水平200px,垂直20px</p>
<p>  </p>
</div>  <br>  <!--背景关联。如果文档比较长,那么当文档向下滚动时,背景图像也会随之滚动。当文档滚动到超过图像的位置时,图像就会消失。-->  <div id="bgImageAttach">    <p>这个段落的背景图像不会随着文字滚动。</p>
<p>    </p>
<p>这个段落的背景图像不会随着文字滚动。</p>
<p>    </p>
<p>这个段落的背景图像不会随着文字滚动。</p>
<p>    </p>
<p>这个段落的背景图像不会随着文字滚动。</p>
<p>    </p>
<p>这个段落的背景图像不会随着文字滚动。</p>
<p>    </p>
<p>这个段落的背景图像不会随着文字滚动。</p>
<p>    </p>
<p>这个段落的背景图像不会随着文字滚动。</p>
<p>    </p>
<p>这个段落的背景图像不会随着文字滚动。</p>
<p>    </p>
<p>这个段落的背景图像不会随着文字滚动。</p>
<p>    </p>
<p>这个段落的背景图像不会随着文字滚动。</p>
<p>    </p>
<p>这个段落的背景图像不会随着文字滚动。</p>
<p>    </p>
<p>这个段落的背景图像不会随着文字滚动。</p>
<p>    </p>
<p>这个段落的背景图像不会随着文字滚动。</p>
<p>    </p>
<p>这个段落的背景图像不会随着文字滚动。</p>
<p>    </p>
<p>这个段落的背景图像不会随着文字滚动。</p>
<p>    </p>
<p>这个段落的背景图像不会随着文字滚动。</p>
<p>    </p>
<p>这个段落的背景图像不会随着文字滚动。</p>
<p>    </p>
<p>这个段落的背景图像不会随着文字滚动。</p>
<p>  </p>
</div>
Rendering:


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?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 TrendsThe 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?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?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 ApplicationsHTML, 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?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?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?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

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools