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The CSS box model specifies how the element content, padding, border, and padding are processed by the element box. 1. CSS box model Overview
The inmost part of the element box is the actual content, and the content is direct
and data of the element.
Line. Each border has three aspects: width, style, and color.
(2) border and background
CSS rules indicate that borders are drawn on the "background of elements ". This is important because some borders are "broken" (for example, dotted border or dotted line ).
Box), the background of the element should appear between the visible parts of the border. CSS2 indicates that the backgro
1 CSS Box ModelIn the past, programmers used tables to lay out a Web page, that is, to locate the content of a typeset page by nesting tables and tables of varying sizes. Later, after the advent of CSS, in the page layout, in order to be able to make the pages of the various parts of the reasonable organization, the de
side axis by the margin of the line at the end of the side axis.
Center: The margin box for the telescopic project is centered on the side axis of the row. (If the size of the telescoping row is smaller than the scaling item, the scaling item overflows the same amount in two directions).
Baseline: This value is equivalent to Flex-start if the inline and lateral axes of the flex project are the same
,border-bottom,margin-bottom, The sum of these 7 attributes must be equal to the height property of the parent element.where Margin-top,margin-bottom and height can be set to autoWhen the Margin-top and margin-bottom of a block element in a normal flow are set to auto, it is set to 0, that is, the element cannot be centered vertically, and actually the element has no margin. Positioning elements if set to auto has different processing results.If the h
, but it will not damage the box. Padding is filled, as if we are in order to ensure that the contents of the box is not damaged, filled with something, such as foam or plastic film, filled with a lot of small, soft and hard, the response in the Web page is the size of padding. and the outer layer is the border border, because the border has the size and color properties, the equivalent of the
the standard of the consortium-CSS-(3) box model and line model
1. Visual format models visual formatting model
(1) The mechanism used to process documents and display them on visual media is a set of rules that specify how browsers handle each box.
(2) control the layout of the factors
A. Size and type of box
Key words: Box Model, block and inline elements, CSS SelectorReference:
[Example]Requirements:1) the width and height are both 200 pixels;2) The color is red #900;
Do it by yourself to see if it can be done? Don't look at my code first. If you can't do it, download it and follow the steps below to modify it.The following is my code: sy_example 1.rar (498Bytes)In IE6 and FF, the following results are disp
To make this kind of loading, we can use only one label and then use Box-shadow to make a loading diagram.
First, you need a label:And then the CSS:
$fontSize: 30px;
$radius: 2em;
.Loading {
font-size: $fontSize;
Width:1em;
Height:1em;
border-radius:50%;
margin:100px Auto;
box
positioning function of the DIV+CSS model, that is, the use of the box model to replace the layout of the traditional table layout, so the box model is in the Learning Div+css layout method must learn a model, This model allows you to understand how the relative position of the div and Div in a Web page is laid out.As
In iframe, make the bootstrap modal box pop up on the parent page. iframebootstrap
The iframe is used on the page during project writing over the past few days. However, when the bootstrap modal box is used in the subpage, the pop-up modal box is centered on the subpage, in
supported only by IE10 and requires the addition of a prefix-ms-"3" new version Display:flex | Inline-flexThis version is compatible with ie11+, Firefox, Safari, Chrome, opera, and mobile, but the mobile side ios7.1-8.4 needs to be prefixed-webkit-DisplayTo make an element into a telescopic container, you need to use the Display property. Elements that use flex layout, called Telescopic containers (Flex container), are child elements within a contain
. You can use textarea to replace input, set a row's height, rank, and scroll up and down to view. (For other solutions, refer to the 6th points below)3. When the focus is obtained, the cursor disappears or is misplaced:
-WebKit-user-select: None: the input box cannot be entered in iOS, And the cursor does not appear. The settings are as follows:
user-select:text;-webkit-user-select:text;
Use scrollintoview to
Preface
If you want to try to typeset web pages without using tables, you can use CSS to typeset your web pages, that is, you can often use Div to orchestrate your web page structure, or you want to learn about the standard design of web pages, or say that your boss wants you to change the traditional form formatting method to improve the competitiveness of enterprises, one of the things you must understand is the
;
1 line-height:200px;
Single-line text is centered vertically: The box is the same height as the row.
1 Div.box1 {2 width:300px;3 height:100px;4 font-size:30px;5 line-height:100px;67}
Percent indication:% ( representation and font size ratio )
1. Box2 {2 width:400px;3 height:100px;4 border:1px solid #000;5 font-size:20px;6/*line-height:1
padding properties.}inline-block{In short, the element can be displayed in one line, and the width and height margins can be set.}Block-level elements default to a whole line regardless of its width there is no whole line wide useless space no other elements to useProperty: Display:block;Defaults to a whole line the default width an entire row can be set to a wide line with only its owninline (inline) elements define a piece of content (text) that is not occupied within the line. Other inline e
Sometimes we need to write a flexible box in CSS3, so how does this code work? This needs to use our Box-shadow attribute, he can let the box in the display when the shadow effect, the following will give you a detailed explanation
Writing:
Box-shadow:length length length color;
The first parameter indicates the horiz
Author: TangInstance Web site: http://www.hsptc.com/css2.htmlObjectiveIf you want to try the page layout without a table, instead, you can use CSS to format your Web page, which is often used to compose your Web page structure with Div, or you want to learn the standard design of Web pages, or your boss wants you to change the traditional form layout, improve the competitiveness of enterprises, Then you must be exposed to a knowledge point is the
Author: Tang GuohuiInstance webpage: http://www.hsptc.com/css2.htmlPrefaceIf you want to try to typeset web pages without using tables, you can use CSS to typeset your web pages, that is, you can often use DIV to orchestrate your web page structure, or you want to learn about the standard design of web pages, or your boss wants you to change the traditional form layout mode to improve the competitiveness of enterprises, one of the things you must unde
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CSS padding
CSS border
CSS margin
CSS margin merge
The CSS box model specifies how the element content, padding, border, and padding are processed by the element
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