Table of Contents
回复讨论(解决方案)
Home Web Front-end HTML Tutorial urgent! The title should be long~_html/css_WEB-ITnose

urgent! The title should be long~_html/css_WEB-ITnose

Jun 24, 2016 am 11:52 AM

昨天临时接了个任务,修改个网页的前端CSS。
由于之前完全没有接触过。所以特来求助。。。
1、下面这种写法没搞懂是什么意思。

#mainBox #topBanner #menu{	display:table;	width:auto;	height:100%;	float:left;}
Copy after login

2、下面这段CSS在IE7以及IE8正常,但在IE9以上不正常。
这段主要实现是顶部的一个工具栏。
CSS:#mainBox{	display:block;	margin-left:auto;	margin-right:auto;	width:940px;}#mainBox #topBanner{	display:none;	width:100%;	height:30px;	background:url("res/bannerBg.png") repeat-x;}#mainBox #topBanner #logo{	width:230px;	height:100%;	float:left;	background:url("res/logo.png") no-repeat;}#mainBox #topBanner #menu{	width:auto;	height:100%;	float:left;}#mainBox #topBanner #menu a{	display:block;	padding:8px;	width:115px;	background:url("res/bigbtn.png") repeat-x;	color:#C6C5C8;	line-height:100%;	text-decoration:none;	float:left;}HTML:  <div id="mainBox">	<div id="topBanner">		<div id="logo"></div>		<div id="menu">			<a id="liveBtn" href="javascript:;" title="LIVE SHOW">LIVE</a>			<a id="playbackBtn" href="javascript:;" title="PLAY BACK">PLAY BACK</a>			<a id="setupBtn" title="SET UP" href="javascript:;">SETTINGS</a>			<a id="logoutBtn" title="LOG OUT" href="javascript:;">LOG OUT</a>		</div>	</div></div>
Copy after login

具体表现为:IE7下
这段正常显示,IE8的时候
这段整体下沉了30px,IE9下
整体不显示。
图片上传不了(CSDN最近大姨妈太严重了)。 大致的效果是这样的。
IE7:/*logo*//*btn1*//*btn2*//*btn3*//*btn4*/          <=====正常效果IE8:/*logo*/     /*btn1*//*btn2*//*btn3*//*btn4*/        <=====下沉了30pxIE9:/*logo*/
Copy after login

3、请大家给介绍几个有关CSS布局的技术博客(由浅入深)和书籍。
4、第一次正面接触CSS,也不知道用什么工具,给介绍个常用的调试工具。
在此先谢过了。


回复讨论(解决方案)

补充一下:

#mainBox #topBanner{    display:none;    width:100%;    height:30px;    background:url("res/bannerBg.png") repeat-x;}display属性是通过JS来动态改变成block的。
Copy after login

贴出的代码咱看不出什么,,只能猜测是,a引起的,,#mainBox #topBanner #menu a设置一下margin:0;line-height:0;试试

ie9浏览器已经有控制台 可以查看dom元素状态了 f12

贴出的代码咱看不出什么,,只能猜测是,a引起的,,#mainBox #topBanner #menu a设置一下margin:0;line-height:0;试试


#mainBox #topBanner #menu
这种写法是不是 就是 CSS 后代选择器
http://www.w3school.com.cn/css/css_selector_descendant.asp


贴出的代码咱看不出什么,,只能猜测是,a引起的,,#mainBox #topBanner #menu a设置一下margin:0;line-height:0;试试


#mainBox #topBanner #menu
这种写法是不是 就是 CSS 后代选择器
http://www.w3school.com.cn/css/css_selector_descendant.asp


不是后代选择器
简单来说就是这几个id用的是同一个样式



贴出的代码咱看不出什么,,只能猜测是,a引起的,,#mainBox #topBanner #menu a设置一下margin:0;line-height:0;试试


#mainBox #topBanner #menu
这种写法是不是 就是 CSS 后代选择器
http://www.w3school.com.cn/css/css_selector_descendant.asp


不是后代选择器
简单来说就是这几个id用的是同一个样式


#mainBox{    display:block;    margin-left:auto;    margin-right:auto;    width:940px;}#mainBox #topBanner{    display:none;    width:100%;    height:30px;    background:url("res/bannerBg.png") repeat-x;}#mainBox #topBanner #logo{    width:230px;    height:100%;    float:left;    background:url("res/logo.png") no-repeat;}#mainBox #topBanner #menu{    width:auto;    height:100%;    float:left;}
Copy after login
Copy after login
Copy after login

那像这几个
mainBox ,topBanner ,menu,logo分别都是哪些属性呢?




贴出的代码咱看不出什么,,只能猜测是,a引起的,,#mainBox #topBanner #menu a设置一下margin:0;line-height:0;试试


#mainBox #topBanner #menu
这种写法是不是 就是 CSS 后代选择器
http://www.w3school.com.cn/css/css_selector_descendant.asp


不是后代选择器
简单来说就是这几个id用的是同一个样式


#mainBox{    display:block;    margin-left:auto;    margin-right:auto;    width:940px;}#mainBox #topBanner{    display:none;    width:100%;    height:30px;    background:url("res/bannerBg.png") repeat-x;}#mainBox #topBanner #logo{    width:230px;    height:100%;    float:left;    background:url("res/logo.png") no-repeat;}#mainBox #topBanner #menu{    width:auto;    height:100%;    float:left;}
Copy after login
Copy after login
Copy after login

那像这几个
mainBox ,topBanner ,menu,logo分别都是哪些属性呢?




你贴的这些全部都是以 CSS ID 选择器 命名的样式名.

CSS ID 选择器 有以下属性
1.在一个 HTML文档中,ID 选择器仅仅会使用一次;
2.ID 选择器不能结合使用;


至于你的问题

那像这几个
mainBox ,topBanner ,menu,logo分别都是哪些属性呢?

这个是后代选择器的写法.所以是选择作为某元素后代的元素.比如logo,把他定义到DIV/SPAN上面,SPAN/DIV就用上了他
但后代选择器用ID来定义 又没有任何意义.
所以我说他这套命名是不太规范的(个人意见)





贴出的代码咱看不出什么,,只能猜测是,a引起的,,#mainBox #topBanner #menu a设置一下margin:0;line-height:0;试试


#mainBox #topBanner #menu
这种写法是不是 就是 CSS 后代选择器
http://www.w3school.com.cn/css/css_selector_descendant.asp


不是后代选择器
简单来说就是这几个id用的是同一个样式


#mainBox{    display:block;    margin-left:auto;    margin-right:auto;    width:940px;}#mainBox #topBanner{    display:none;    width:100%;    height:30px;    background:url("res/bannerBg.png") repeat-x;}#mainBox #topBanner #logo{    width:230px;    height:100%;    float:left;    background:url("res/logo.png") no-repeat;}#mainBox #topBanner #menu{    width:auto;    height:100%;    float:left;}
Copy after login
Copy after login
Copy after login

那像这几个
mainBox ,topBanner ,menu,logo分别都是哪些属性呢?




你贴的这些全部都是以 CSS ID 选择器 命名的样式名.

CSS ID 选择器 有以下属性
1.在一个 HTML文档中,ID 选择器仅仅会使用一次;
2.ID 选择器不能结合使用;


至于你的问题

那像这几个
mainBox ,topBanner ,menu,logo分别都是哪些属性呢?

这个是后代选择器的写法.所以是选择作为某元素后代的元素.比如logo,把他定义到DIV/SPAN上面,SPAN/DIV就用上了他
但后代选择器用ID来定义 又没有任何意义.
所以我说他这套命名是不太规范的(个人意见)



<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>无标题文档</title><style type="text/css">div{margin:5px;}.t{background-color:#eee;width:200px;}.t .y{background-color:#ccc;}.t .y .o{background-color:#333;}.t .i{background-color:#999;}.t .i .o{background-color:#666;}.t #z{background-color:#FF5151;}.t #z #y{background-color:#000079;}.t #m{background-color:#8600FF;}.t #m #y{background-color:#642100;}</style></head><body><div class="t">t	<div class="i">i		<div class="o">o</div>	</div>	<div class="y">y		<div class="o">o</div>	</div>	<div id="z">z		<div id="y">y</div>	</div>	<div id="m">m		<div id="y">y</div><!--个人感觉不规范的-->	</div></div></body></html>
Copy after login

个人感觉不规范原因
1.与W3C CSSID选择器标准冲突;
2.CSS选择器也有权重的.

Statement of this Website
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

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 Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

What is the purpose of the <progress> element? What is the purpose of the <progress> element? Mar 21, 2025 pm 12:34 PM

The article discusses the HTML &lt;progress&gt; element, its purpose, styling, and differences from the &lt;meter&gt; element. The main focus is on using &lt;progress&gt; for task completion and &lt;meter&gt; for stati

Is HTML easy to learn for beginners? Is HTML easy to learn for beginners? Apr 07, 2025 am 12:11 AM

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.

What is the purpose of the <datalist> element? What is the purpose of the <datalist> element? Mar 21, 2025 pm 12:33 PM

The article discusses the HTML &lt;datalist&gt; element, which enhances forms by providing autocomplete suggestions, improving user experience and reducing errors.Character count: 159

What is the viewport meta tag? Why is it important for responsive design? What is the viewport meta tag? Why is it important for responsive design? Mar 20, 2025 pm 05:56 PM

The article discusses the viewport meta tag, essential for responsive web design on mobile devices. It explains how proper use ensures optimal content scaling and user interaction, while misuse can lead to design and accessibility issues.

What is the purpose of the <iframe> tag? What are the security considerations when using it? What is the purpose of the <iframe> tag? What are the security considerations when using it? Mar 20, 2025 pm 06:05 PM

The article discusses the &lt;iframe&gt; tag's purpose in embedding external content into webpages, its common uses, security risks, and alternatives like object tags and APIs.

The Roles of HTML, CSS, and JavaScript: Core Responsibilities The Roles of HTML, CSS, and JavaScript: Core Responsibilities Apr 08, 2025 pm 07:05 PM

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.

What is the purpose of the <meter> element? What is the purpose of the <meter> element? Mar 21, 2025 pm 12:35 PM

The article discusses the HTML &lt;meter&gt; element, used for displaying scalar or fractional values within a range, and its common applications in web development. It differentiates &lt;meter&gt; from &lt;progress&gt; and ex

Understanding HTML, CSS, and JavaScript: A Beginner's Guide Understanding HTML, CSS, and JavaScript: A Beginner's Guide Apr 12, 2025 am 12:02 AM

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

See all articles