CSS

CSS's specificity feature or uniqueness, which is a standard for measuring CSS precedence,Since the standard has the determination and the calculation method, specificity uses a four-digit number to indicate,More like four levels from left to right,

[HTML5] Mark text, 1. Mark content with basic text elements First look at the display effect: Corresponding HTML code: Learn4Font element B -- I am the example. element em -- I am the example. element I -- I am the example.

[HTML] embedded image, Embedded Image The img element allows us to embed images in HTML documents. To embed an image, use the src and alt attributes. The Code is as follows: Display Effect: 1. Embed images in hyperlinks A common use of img

Optimize website optimization webpage code and webpage code Some time ago, I personally searched for some information about optimization and shared it with you:   Website code optimization is also an optimization measure in website optimization.

Node. js and node. js Is Node. js Running Based on Chrome JavaScript? Is it easy to build a fast and scalable platform? Networking ?. Node. js uses event-driven, lightweight and non-blocking I/O models? Effect ,? It is often suitable for

Css float, css floatStandard Document Stream The form is divided into rows from top to bottom, and the elements are discharged from left to right in each row, that is, the document stream. each non-floating block-level element occupies only one row,

Atitit.html css viewer rationale overview attilaxsummary, Atitit.html attilax   Introduction to Atitit.html css browser principles theory attilax Summary   1.1. How does the browser work: rendering engine, HTML parsing (serialization 2) 1 2. 5.1.1

Daily tag (1), tag (1) Label Learning 1. Title labels (levels of h1, h2, h3, h4, h5, and h6 decrease in sequence)   2. Section label   3. Image Tag   4. Comment tag   5. Italics (emphasizing labels)   6. Bold(Emphasizing tags)   7.

Determine the width and height of a box in different modes and determine the box mode Once encountered such a problem, set a div. When we set padding for the div, we found that the width and height of the entire div have changed. Here we have a

Learning CSS3 animations and css3animation CSS3 provides many advanced functions, such as 3D effects, animations, and multiple columns. Today I wrote an article to record how to use CSS3 to write an animation. It is ugly to say that IE9 and earlier

Css positioning, css relative positioningFirst, let's look at an example: structure: default location relative positioning absolute positioning fixed positioning Style: * {Padding: 0; margin: 0 ;}. Static {width: 300px; height: 300px ;}.

Conversion between px and em, pxem Conversion Many Web Designers set the font size in the general selector when writing css, which is generally 12px in Chinese. However, ie cannot adjust the font size that uses px as the unit. In fact, using em as a

2016.9.25 learn the details, 6.9.25. Normally, using bootstrap is faster than writing a responsive layout with native code. Add the previous article "Practical Application of bootstrap": Bootstrap lang: many people in the class forgot to change the

HTML/CSS Summary 1. htmlcss Summary 1. Define the webpage background color The color can be expressed in two ways: 1. Specify the color name directly, such as blue. 2. Use hexadecimal data, for example, # RRGGBB, to represent two hexadecimal data.  

Beating heart, beating Do not use images. Use CSS3 to make a beating heart. HTML: 　　　　 First, the two divs float and circle on the left and the upper right corner: .box{ margin: 100px;

CSS floating settings and cleanup, CSS floating settings clear Float: Set floating Floating will remove elements from the normal Document Stream, move the elements left or right, and the elements around them will be re-arranged, which is very useful

Explore the use of the border-top attribute in CSS, cssborder-top The previous section describes the usage of the CSS top attribute. This section describes how to use the CSS border-top attribute, border-top short attribute sets all attributes of

Summary of new users of less sass and new users of lesssass Less is a CSS-based extension technology.. Less uses a parser (such as koala) to convert the file format to CSS.@ + Variable name + ValueSyntaxVariableLESS allows developers to customize

Reset.css (detailed description) Detailed Description @ Charset "UTF-8 ";/*************************************** **************************************** */ /* Clear the internal and external margins */Html, body, div, h1, h2, h3, h4, h5, h6, hr, p,

Position of CSS, cssposition Four property values of position: demo1 demo2 1. relativeThe relative attribute is offset relative to its own position. If demo1 is set to a relative attribute, for example, set the following CSS code:#