css实现的在图片上面添加文字说明:
在一些图片效果中，图片上面会有文字说明，下面就通过代码实例介绍一下如何实现此效果。
代码实例如下:
<!DOCTYPE html><html><head><meta charset=" utf-8"><meta name="author" content="http://www.softwhy.com/" /><title>蚂蚁部落</title><style type="text/css">.thediv{ width:400px; height:200px; position:relative;}img{ width:400px; height:200px;}.thediv span{ width:400px; height:50px; display:block; text-align:center; line-height:50px; background-color:#333; filter:alpha(opacity=50); -moz-opacity:0.5; opacity:0.5; position:absolute; top:100px; color:red;}</style></head><body><div class="thediv"> <img src="/static/imghwm/default1.png" data-src="mytest/demo/tree.jpg" class="lazy"/ alt="css实现的在图片上面添加文字说明_html/css_WEB-ITnose" > <span>蚂蚁部落欢迎您</span></div></body></html>
以上代码实现了我们的要求，图片上面有文字说明，并且具有半透明效果。实现原理非常的简单，也就是设置最外层div使用相对定位，然后设置span元素绝对定位，这样就可以以外层div为定位参考对象，然后设置top属性值就可以了。但是上面的并不完美，因为不但背景透明了，而且文字也透明了，这往往并不是我们希望看到的，代码如下:
<!DOCTYPE html><html><head><meta charset=" utf-8"><meta name="author" content="http://www.softwhy.com/" /><title>蚂蚁部落</title><style type="text/css">.thediv{ width:400px; height:200px; position:relative;}img{ width:400px; height:200px;}.thediv span{ width:400px; height:50px; display:block; text-align:center; line-height:50px; position:absolute; top:100px;}.content{ background-color:#333; filter:alpha(opacity=50); -moz-opacity:0.5; opacity:0.5;}.text{ color:red; z-index:100;}</style></head><body><div class="thediv"> <img src="/static/imghwm/default1.png" data-src="mytest/demo/tree.jpg" class="lazy"/ alt="css实现的在图片上面添加文字说明_html/css_WEB-ITnose" > <span class="content"></span> <span class="text">蚂蚁部落欢迎您</span></div></body></html> 以上代码实现了我们的要求，背景透明但是文本不透明。在上面的代码中，之所以文字透明，是因为透明属性具有继承性，子元素也会出现透明效果，这样就可以利用定位的方式将存放文本的span元素覆盖与半透明的span元素之上。
原文地址是:http://www.softwhy.com/forum.php?mod=viewthread&tid=12679
更多内容可以参阅:http://www.softwhy.com/divcss/
What is the purpose of HTML tags?Apr 28, 2025 am 12:02 AMHTMLtagsareessentialforstructuringwebpages,enhancingaccessibility,SEO,andperformance.1)Theyareenclosedinanglebracketsandusedinpairstocreateahierarchicalstructure.2)SemantictagslikeandimproveuserexperienceandSEO.3)Creativetagslikeenabledynamicgraphics
What are self-closing tags? Give an example.Apr 27, 2025 am 12:04 AMSelf-closingtagsinHTMLandXMLaretagsthatclosethemselveswithoutneedingaseparateclosingtag,simplifyingmarkupstructureandenhancingcodingefficiency.1)TheyareessentialinXMLforelementswithoutcontent,ensuringwell-formeddocuments.2)InHTML5,usageisflexiblebutr
Beyond HTML: Essential Technologies for Web DevelopmentApr 26, 2025 am 12:04 AMTo build a website with powerful functions and good user experience, HTML alone is not enough. The following technology is also required: JavaScript gives web page dynamic and interactiveness, and real-time changes are achieved by operating DOM. CSS is responsible for the style and layout of the web page to improve aesthetics and user experience. Modern frameworks and libraries such as React, Vue.js and Angular improve development efficiency and code organization structure.
What are boolean attributes in HTML? Give some examples.Apr 25, 2025 am 12:01 AMBoolean attributes are special attributes in HTML that are activated without a value. 1. The Boolean attribute controls the behavior of the element by whether it exists or not, such as disabled disable the input box. 2.Their working principle is to change element behavior according to the existence of attributes when the browser parses. 3. The basic usage is to directly add attributes, and the advanced usage can be dynamically controlled through JavaScript. 4. Common mistakes are mistakenly thinking that values need to be set, and the correct writing method should be concise. 5. The best practice is to keep the code concise and use Boolean properties reasonably to optimize web page performance and user experience.
How can you validate your HTML code?Apr 24, 2025 am 12:04 AMHTML code can be cleaner with online validators, integrated tools and automated processes. 1) Use W3CMarkupValidationService to verify HTML code online. 2) Install and configure HTMLHint extension in VisualStudioCode for real-time verification. 3) Use HTMLTidy to automatically verify and clean HTML files in the construction process.
HTML vs. CSS and JavaScript: Comparing Web TechnologiesApr 23, 2025 am 12:05 AMHTML, 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.
HTML as a Markup Language: Its Function and PurposeApr 22, 2025 am 12:02 AMThe 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 of HTML, CSS, and JavaScript: Web Development TrendsApr 19, 2025 am 12:02 AMThe 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.
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function
MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.
SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
Notepad++7.3.1
Easy-to-use and free code editor
