citadel

Database virualization

HTML5:

CSS3

box-model 盒模型 分为四个部分 内容content 填充padding 边界margin 边框 border

它是CSS3 中的重要概念， 是元素大小的呈现方式 every element in web design is a rectangular box *margin: The CSS margin properties are used to generate space around elements. The margin properties set the size of the white space outside the border.

*padding: The CSS padding properties are used to generate space around content. The padding clears an area around the content (inside the border) of an element.

Explanation of the different parts:

Content - The content of the box, where text and images appear Padding - Clears an area around the content. The padding is transparent Border - A border that goes around the padding and content Margin - Clears an area outside the border. The margin is

CSS Layout - The display property

  • The display property is the most important CSS property for controlling layout

  • the display property specifies if/how an element is displayed

Block-level Elements

the

element is a block-level element

Inline Elements

an inline element does

CSS选择器 id选择器 #myid 类选择器 .myclassname 标签选择器 div, h1, p

content

CSS3新增特性：

可以加载客户端所没有安装的字体， 从服务器端加载

font-face

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