Differences: 1. The html tag is the root element of the document; the body tag is the main element of the document; 2. The global styles that should be applied to the html and body tags are different; 3. In JS, html corresponds to "document.documentElement" ", body corresponds to "document.body".
The operating environment of this tutorial: windows7 system, CSS3&&HTML5&&javascript version 1.8.5, Dell G3 computer.
In CSS, the difference between and
is often ignored, and global styles are either defined on or on . In fact, there is a difference between the two, and both CSS veterans and novices should understand it.How HTML and Body are related
<!DOCTYPE html> <html> <head> <!-- Metadata and such --> </head> <body> <!-- Where the content begins --> <body> </html>
According to the standard definition, is the root element of the document,
, < ;body> are the only two child elements of . According to the specification, is the element that needs to be distinguished from .Therefore, and
are parent-child relationships. In an HTML document, the :root selector corresponds to the element.:root { } html { }
It should be noted that the :root selector (pseudo-class) has a higher priority than the html selector: (0, 0, 1, 0) vs (0, 0, 0, 1).
Which global styles should be applied to HTML
html { font-size: 62.5%; } body { font-size: 1.4rem; /* =14px */ } h1 { font-size: 2.4rem; /* =24px */ }
Wacky background-color
CSS There are some weird behaviors in there. After applying background-color to
, even if the elements in do not occupy the entire viewport, the background color will spread to the entire viewport.Setting background-color on html can solve this problem.
height: 100%
If the height of
and its sub-elements needs to be set to the height of the window, the element also needs to be added:html, body { height: 100%; }
Which global styles should be applied to Body
In the earlier specification,
had the following inline attributes:background
- ##bgcolor
- marginbottom
- marginleft
- marginright
- margintop
- text
Inline Attribute | CSS Property |
background | |
background | background-color |
margin-bottom | |
margin-left | |
margin-right | |
margin-top | |
font |
Differences in JavaScriptThe above are some examples of and
in CSS The difference actually exists in JavaScript, for example, html corresponds to document.documentElement, and body corresponds to document.body
. For more programming-related knowledge, please visit:
The above is the detailed content of What are the differences between html and body tags?. For more information, please follow other related articles on the PHP Chinese website!

在css中,可用list-style-type属性来去掉ul的圆点标记,语法为“ul{list-style-type:none}”;list-style-type属性可设置列表项标记的类型,当值为“none”可不定义标记,也可去除已有标记。

区别是:css是层叠样式表单,是将样式信息与网页内容分离的一种标记语言,主要用来设计网页的样式,还可以对网页各元素进行格式化;xml是可扩展标记语言,是一种数据存储语言,用于使用简单的标记描述数据,将文档分成许多部件并对这些部件加以标识。

在css中,可以利用cursor属性实现鼠标隐藏效果,该属性用于定义鼠标指针放在一个元素边界范围内时所用的光标形状,当属性值设置为none时,就可以实现鼠标隐藏效果,语法为“元素{cursor:none}”。

转换方法:1、给英文元素添加“text-transform: uppercase;”样式,可将所有的英文字母都变成大写;2、给英文元素添加“text-transform:capitalize;”样式,可将英文文本中每个单词的首字母变为大写。

在css中,rtl是“right-to-left”的缩写,是从右往左的意思,指的是内联内容从右往左依次排布,是direction属性的一个属性值;该属性规定了文本的方向和书写方向,语法为“元素{direction:rtl}”。

在css中,可以利用“font-style”属性设置i元素不是斜体样式,该属性用于指定文本的字体样式,当属性值设置为“normal”时,会显示元素的标准字体样式,语法为“i元素{font-style:normal}”。

在css3中,可以用“transform-origin”属性设置rotate的旋转中心点,该属性可更改转换元素的位置,第一个参数设置x轴的旋转位置,第二个参数设置y轴旋转位置,语法为“transform-origin:x轴位置 y轴位置”。


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

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

SublimeText3 Mac version
God-level code editing software (SublimeText3)

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),

Notepad++7.3.1
Easy-to-use and free code editor

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.
