search
HomeWeb Front-endHTML Tutorialcss3 flex流动自适应响应式布局实例_html/css_WEB-ITnose

上次简要的说了一些css3中flex的相关概念(详细: css学习16:css3 flex流动自适应响应式布局设计 ),这次继续说下css3的flex,简单的举几个实例。

一、图片自适应居中

实例图:

实例HTML:

<div class="demo">	<img src="/static/imghwm/default1.png"  data-src="http://dummyimage.com/100x100"  class="lazy" alt=""></div><div class="demo">	<img src="/static/imghwm/default1.png"  data-src="http://dummyimage.com/200x100"  class="lazy"  class="" alt=""></div><div class="demo">	<img src="/static/imghwm/default1.png"  data-src="http://dummyimage.com/100x200"  class="lazy" alt=""></div><div class="demo">	<img src="/static/imghwm/default1.png"  data-src="http://dummyimage.com/200x200"  class="lazy" alt=""></div><div class="demo">	<img src="/static/imghwm/default1.png"  data-src="http://dummyimage.com/50x50"  class="lazy" alt=""></div>

实例CSS:

.demo{	width: 100px;	height: 100px;	border: 2px solid #ddd;	background: #f5f5f5;	padding: 6px;	float: left;	margin-left: 20px;	/*flex布局(作用于容器)*/	display: flex;	/*水平居中(作用于容器)*/	justify-content: center;	/*垂直居中(作用于容器)*/	align-items: center;}.demo img{	max-width: 100px;	max-height: 100px;	width: auto;	height: auto;}

demo: http://demo.qianduanblog.com/2799/1.html

二、水平响应式列表

实例图:

实例HTML:

<div class="demo-wrap">	<div class="demo">		<div class="item item1">高120px</div>		<div class="item item2">高50px</div>		<div class="item item3">高140px</div>		<div class="item item4">高100px</div>	</div></div>

实例CSS:

.demo-wrap{	border: 2px solid #ddd;	background: #f5f5f5;	padding: 6px;}.demo{	width: 100%;	/*flex布局(作用于容器)*/	display: flex;	/*两端对齐(作用于容器)*/	justify-content: space-between;}.demo .item{	width: 100px;	background: #ffd;	color: #C90000;	font-size: 20px;	text-align: center;	line-height: 50px;}.demo .item1{	height: 120px;}.demo .item2{	height: 50px;}.demo .item3{	height: 140px;}.demo .item4{	height: 100px;}

demo: http://demo.qianduanblog.com/2799/2.html

三、水平响应式列表底端对齐

和上个例子差不多,只是增加了底端对齐的的特性。

只是修改了容器的样式:

.demo{	width: 100%;	/*flex布局(作用于容器)*/	display: flex;	/*两端对齐(作用于容器)*/	justify-content: space-around;	/*侧轴方向对齐方式(作用于容器)*/	align-items: flex-end;}

demo: http://demo.qianduanblog.com/2799/3.html

四、多行响应式布局

宽屏:

中屏:

窄屏:

HTML代码:

<div class="demo-wrap">	<div class="demo">		<div class="item"></div>		<div class="item"></div>		<div class="item"></div>		<div class="item"></div>		<div class="item"></div>		<div class="item"></div>		<div class="item"></div>		<div class="item"></div>	</div></div>

CSS代码:

.demo-wrap{	border: 2px solid #ddd;	background: #f5f5f5;	padding: 6px;}.demo{	width: 100%;	/*flex布局(作用于容器)*/	display: flex;	/*两端对齐(作用于容器)*/	justify-content: space-around;	/*侧轴方向对齐方式(作用于容器)*/	align-items: flex-end;	/*换行(作用于容器)*/	flex-wrap: wrap;}.demo .item{	width: 300px;	height: 50px;	background: #444;	margin-bottom: 20px;}

demo: http://demo.qianduanblog.com/2799/4.html

五、左固定右自适应等高布局

演示截图:

HTML:

<div class="demo">	<div class="left">左边固定宽度为100px,这里设置了高度为auto</div>	<div class="right">右边宽度自适应,并且左右两个区域是等高的,这里设置了高度为200px</div></div>

CSS:

.demo{	/*flex布局(作用于容器)*/	display: flex;	/*项目拉伸对齐,也就是所左边的高度为拉伸到和右边等高,默认是拉伸的*/	/*align-items: stretch;*/}.demo .left{	/*左边固定宽度,必须设置其最小宽度和最大宽度*/	width: 100px;	min-width: 100px;	max-width: 100px;	/*高度自由分配*/	height: auto;	background: #B4D3F7;	/*空白区域分配比例为0(作用于项目)*/	flex-grow: 0;}.demo .right{	margin-left: 10px;	width: auto;	height: 200px;	background: #F7E8B4;	/*空白区域分配比例为1(作用于项目)	左右得到的空白比例为0:1,所以右边会分配到剩余的所有空白区域,	左边成固定的宽度,右边为自适应宽度*/	flex-grow: 1;}

demo: http://demo.qianduanblog.com/2799/5.html

六、左右固定中间自适应宽度底部对齐布局

上面的例子是左右布局的,相比较而言,双栏布局会做了,那么三栏布局也就不是问题了。先看实例图:

HTML:

<div class="demo">	<div class="left">左边固定宽度为100px,这里设置了高度为auto</div>	<div class="center">中间宽度自适应,并且左中右两个区域是等高的,这里设置了高度为200px</div>	<div class="right">右边固定宽度为150px,这里设置了高度为auto</div></div>

CSS:

.demo{	/*flex布局(作用于容器)*/	display: flex;	/*项目拉伸对齐,也就是所左边的高度为拉伸到和右边底部对齐*/	align-items: flex-end;}.demo .left{	/*左边固定宽度,必须设置其最小宽度和最大宽度*/	width: 100px;	min-width: 100px;	max-width: 100px;	/*高度自由分配*/	height: auto;	background: #B4D3F7;	/*空白区域分配比例为0(作用于项目)*/	flex-grow: 0;}.demo .center{	margin: 0 10px;	width: auto;	height: 200px;	background: #F7E8B4;	/*空白区域分配比例为1(作用于项目)	左右得到的空白比例为0:1,所以右边会分配到剩余的所有空白区域,	左边成固定的宽度,右边为自适应宽度*/	flex-grow: 1;}.demo .right{	/*右边固定宽度,必须设置其最小宽度和最大宽度*/	width: 150px;	min-width: 150px;	max-width: 150px;	/*高度自由分配*/	height: auto;	background: #CBFFD2;	/*空白区域分配比例为0(作用于项目)*/	flex-grow: 0;}

demo: http://demo.qianduanblog.com/2799/6.html

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
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.

HTML in Action: Examples of Website StructureHTML in Action: Examples of Website StructureMay 05, 2025 am 12:03 AM

HTML is used to build websites with clear structure. 1) Use tags such as, and define the website structure. 2) Examples show the structure of blogs and e-commerce websites. 3) Avoid common mistakes such as incorrect label nesting. 4) Optimize performance by reducing HTTP requests and using semantic tags.

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 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

WebStorm Mac version

WebStorm Mac version

Useful JavaScript development tools

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),