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Editor to share with you the example analysis of the code in Css, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Text-rendering: optimizeLegibility tells browsers how to render text, it is not a standard for CSS3, and different browsers have different rendering defaults. Strictly speaking, text-rendering does not fully guarantee that text will be rendered the way you want it to be on the user's browser.

Only block-level elements can be float, display:block, which automatically accounts for 100% of the width by default.

Header header section

Height: 100vh; it means 100% viewport height

Background-size: cover; background images cover the entire area, such as a div and a section

Background-position: center; background image is centered

How big is the big background picture? Width between 2700px-3000px and height between 1500px-2000px

Transform, used to manipulate elements, tilt skewing, rotate rotating, move translating, scale scaling. For example, transform: translate (- 50% jurisdiction 50%); move 50% of the width of the element to the left and 50% of the height of the element up

When you give an element an absolute location, the usual routine is: position:absolute;width:1000px;top:50%;left:50%

Add a layer of color to the background image, such as gradient: background-image: linear-gradient (rgba (0,0,0,0.7), rgba (0,0,0,0.7), url (img/h.jpg)

The relativity of font size and font thickness. When the font becomes larger, lower the value of font-weight accordingly.

Letter spacing letter-spacing

Word spacing word-spacing

Link a to several states: .classname: link, .classname: visited, .classname: hover, .classname: active

Transition, which gives the transition effect of element state change

Nav navigation bar

Picture zoom: you can make one value of width and height fixed, and another value set to auto, such as height:100px;width:auto

: after, append content to the element

Display: block, another line, default width 100%

Figure, html5 element tag, which represents a content unit containing diagrams, pictures, displays, code snippets, etc., which can be removed without affecting the entire page element.

Set opacity, opacity: 0.7; Note: this background color is related

The first someclass; of .someclassname:first-child, the last someclass of someclassname:last-child, or .someclassname: last-of-type

Background-attachment: the fixed; background image does not move with the rest of the page; the default value, scroll, means that the background image will move as the rest of the page scrolls

Blockquote is used with cite tags

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