


CSS implementation of a description text when the mouse slides over the text, no JS code_html/css_WEB-ITnose
Use css to pop up content, no js code, just copy the code below and use it.
If you need a background image, please download it from the address below, thank you!
Address: http://download.csdn.net/detail/zurich1979/7229061
First the rendering:
1. Background image and text are added by myself :
2. A text box will pop up after the mouse slides over:
The code is as follows:
body{font-size:12px;}
.popup a{position:relative;top:124px; left:225px;text-decoration:none;}
.popup a:hover{text-decoration:none;background:none;}
.popup span{display:none;}
.popup a:hover span{display:block;top:228px;left: 302px; width:200px; height:80px; relative:absolute;padding:10px;border:1px #00FF00 solid}
Natural and beautiful
The appearance is natural and innocent, crystal clear, and the color is lifelike, close to natural teeth. It maintains its natural color both under light and in natural light, and its reflection and scattering of light is closer to that of natural teeth, giving it a better aesthetic effect.
; Safe and comfortable
It does not contain metal and is composed entirely of porcelain powder. It has no metal base and is light in weight and more comfortable to wear. Porcelain has low thermal conductivity and has a good isolation effect. The dental pulp is less irritating and is more conducive to protecting the health of the dental pulp. -align:left" href="#"> Stable and durable
Hard, wear-resistant, high compressive strength, very good biocompatibility and safety performance, no allergic reaction to metal crowns; no irritation to gums Sex, there will be no gum recession, blue gums, black gum edges, red and swollen gums, etc.; 500px; width:90px; height:30px; font-size:17.78px; float:left; text-align:left" href="#"> Healthy and long-lasting
It has relatively high strength and toughness, good durability, and can be used in Permanently stored in the oral cavity;
Diamond Quality
It is transparent to X-rays and will not be affected when head CT and MRI examinations are required in the future. There is no need to remove the dentures.

HTML, CSS and JavaScript are the core technologies for building modern web pages: 1. HTML defines the web page structure, 2. CSS is responsible for the appearance of the web page, 3. JavaScript provides web page dynamics and interactivity, and they work together to create a website with a good user experience.

The function of HTML is to define the structure and content of a web page, and its purpose is to provide a standardized way to display information. 1) HTML organizes various parts of the web page through tags and attributes, such as titles and paragraphs. 2) It supports the separation of content and performance and improves maintenance efficiency. 3) HTML is extensible, allowing custom tags to enhance SEO.

The future trends of HTML are semantics and web components, the future trends of CSS are CSS-in-JS and CSSHoudini, and the future trends of JavaScript are WebAssembly and Serverless. 1. HTML semantics improve accessibility and SEO effects, and Web components improve development efficiency, but attention should be paid to browser compatibility. 2. CSS-in-JS enhances style management flexibility but may increase file size. CSSHoudini allows direct operation of CSS rendering. 3.WebAssembly optimizes browser application performance but has a steep learning curve, and Serverless simplifies development but requires optimization of cold start problems.

The roles of HTML, CSS and JavaScript in web development are: 1. HTML defines the web page structure, 2. CSS controls the web page style, and 3. JavaScript adds dynamic behavior. Together, they build the framework, aesthetics and interactivity of modern websites.

The future of HTML is full of infinite possibilities. 1) New features and standards will include more semantic tags and the popularity of WebComponents. 2) The web design trend will continue to develop towards responsive and accessible design. 3) Performance optimization will improve the user experience through responsive image loading and lazy loading technologies.

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.


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