来自: http://www.cnblogs.com/tom-zhu/p/5226096.html
Html5和CSS3相信大家现在都已不陌生了吧,但 CSS3哪些新特性值得我们去称赞呢?
首先还是让大家来看几张效果图,相信大家看到这些效果图,肯定会说这些效果只用CSS是如何实现的呢?
1、3D正方形及动画(如果大家用过webpack的话,一定看过webpack的动画logo吧。听老婆大人说现在流行动画的logo,再也不是那些静止不动的喽 :》。)
2、3D正方形边框移动
3、CSS挤压效果
在以上的效果中值得一提的特性如:
1、CSS进行渐变背影的设置,在background中添加了linear-gradient线性渐变,
background: linear-gradient(yellow 0%, #000 80%); /*从0%黄色到80%黑色的渐变*/
2、CSS 3D
perspective:查看视图的位置,如拍照时的镜头位置一样。
transform-style中preserve-3d,设置了此属性时,将子元素包裹在一个3D视图里。
3、CSS animation
说到动画就不得不说jQuery的animation。但有了CSS3后就再也不用JS进行制作动画了。
keyframes定义帧动画,可根据百分比进行设置,也可利用from和to的方式进行设置。
利用animation引用定义好的keyframes帧动画。animation:rotate 20s infinite linear; /*设置引用的动画,动画时间,动画的timing-function,动画方式*/
@keyframes rotate { 0% { transform: rotateX(0deg) rotateY(0deg); } 100% { transform: rotateX(360deg) rotateY(360deg); } }
4、CSS filter
fileter并非IE的过滤器,是CSS3中新添加的属性。
包含效果有:grayscale灰度,sepia褐色,saturate饱和度,hue-rotate色相旋转,invert反色,opacity透明度,brightness亮度,contrast对比度,blur模糊,drop-shadow阴影.
挤压效果就是利用filter中的blur加saturate混合而来。

The roles of HTML, CSS and JavaScript in web development are: HTML is responsible for content structure, CSS is responsible for style, and JavaScript is responsible for dynamic behavior. 1. HTML defines the web page structure and content through tags to ensure semantics. 2. CSS controls the web page style through selectors and attributes to make it beautiful and easy to read. 3. JavaScript controls web page behavior through scripts to achieve dynamic and interactive functions.

HTMLisnotaprogramminglanguage;itisamarkuplanguage.1)HTMLstructuresandformatswebcontentusingtags.2)ItworkswithCSSforstylingandJavaScriptforinteractivity,enhancingwebdevelopment.

HTML is the cornerstone of building web page structure. 1. HTML defines the content structure and semantics, and uses, etc. tags. 2. Provide semantic markers, such as, etc., to improve SEO effect. 3. To realize user interaction through tags, pay attention to form verification. 4. Use advanced elements such as, combined with JavaScript to achieve dynamic effects. 5. Common errors include unclosed labels and unquoted attribute values, and verification tools are required. 6. Optimization strategies include reducing HTTP requests, compressing HTML, using semantic tags, etc.

HTML is a language used to build web pages, defining web page structure and content through tags and attributes. 1) HTML organizes document structure through tags, such as,. 2) The browser parses HTML to build the DOM and renders the web page. 3) New features of HTML5, such as, enhance multimedia functions. 4) Common errors include unclosed labels and unquoted attribute values. 5) Optimization suggestions include using semantic tags and reducing file size.

WebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.

The role of HTML is to define the structure and content of a web page through tags and attributes. 1. HTML organizes content through tags such as , making it easy to read and understand. 2. Use semantic tags such as, etc. to enhance accessibility and SEO. 3. Optimizing HTML code can improve web page loading speed and user experience.

HTMLisaspecifictypeofcodefocusedonstructuringwebcontent,while"code"broadlyincludeslanguageslikeJavaScriptandPythonforfunctionality.1)HTMLdefineswebpagestructureusingtags.2)"Code"encompassesawiderrangeoflanguagesforlogicandinteract

HTML, CSS and JavaScript are the three pillars of web development. 1. HTML defines the web page structure and uses tags such as, etc. 2. CSS controls the web page style, using selectors and attributes such as color, font-size, etc. 3. JavaScript realizes dynamic effects and interaction, through event monitoring and DOM operations.


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