Web Front-endHTML TutorialRegarding the collision problem of div blocks after setting float in css_html/css_WEB-ITnoseRegarding the collision problem of div blocks after setting float in css_html/css_WEB-ITnose
<!doctype html><html> <head> <meta charset="gb2312"/> <title></title> <style type="text/css"> * { margin:0;padding:0; } #dv1 { border: 1px solid red; width: 400px; height: 300px; } #dv2 { /*display:inline; dv3加浮动，dv2不会被挤开，是因为dv3只是停留在它那一行，没有影响到文件流，但是为什么把dv2设置成行级元素就会被下面的dv3挤开呢？？*/ float:left; width: 200px; height: 200px; border: 1px solid green; } #dv3 { width: 400px; height: 100px; border: 1px solid blue; /*position:absolute;*/ } </style> <script type="text/javascript"> </script> </head> <body style="font-size:20px"> <div id="dv1"> 我是dv1中的文本 </div><div id="dv2">我是dv2中的文本</div><div id="dv3">我是dv3中的文本</div> </body></html> 1. If you set float for dv2, the upper div will not be squeezed, but the lower div will be squeezed to the top. Why is this?
2. My teacher said that the lower div is squeezed up because dv2 after float will float to the front, that is, it is not on the same plane as dv3, so an empty position is left for dv3 below. Just hit this empty position. Is this correct?
3. If this is the case, then dv2 has floated to the front, and it is not on the same plane as dv1. Why doesn't it float to the upper left corner? Why is it blocked by the dv1 above when they are no longer on the same plane?
4. In addition, if dv1 is set to display:inline and set as an inline element, dv2 will be squeezed to the upper left corner, and dv1 will be squeezed to the right. According to my teacher, since they are not on the same plane On, why is dv1 squeezed out by dv2?
Please give me the answer, thank you! ! !
Reply to the discussion (solution)
1. The front div does not affect, it only affects the following div after it floats. You can think of it as a queue. The person in front goes to the upper space, and the person behind can take her place.
2. Your teacher is right
3. Because dv1 is a block-level element (the default display is block). Of course dv2 cannot float through. Block means obstacle in English, it’s very clear, right?
4. “dv1 set display:inline” will convert dv1 from a block-level element to an inline element. Inline elements do not take up space. So dv2 can float over.
You can check out Lessons 6 and 22 of the post below.
http://bbs.csdn.net/topics/390648164
Baidu: The difference between inline elements and block-level elements
Specific Take a look at the sixth lesson in http://bbs.csdn.net/topics/390648164
Thank you, I basically understand. How did you create this 3D image? Did you draw it yourself?
Thank you, I basically understand. How did you create this 3D image? Did you draw it yourself?
Drawn with cdr, it is very simple if you are familiar with it.
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.
HTML: The Structure, CSS: The Style, JavaScript: The BehaviorApr 18, 2025 am 12:09 AMThe 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: Evolution and Trends in Web DesignApr 17, 2025 am 12:12 AMThe 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.
HTML vs. CSS vs. JavaScript: A Comparative OverviewApr 16, 2025 am 12:04 AMThe 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.
HTML: Is It a Programming Language or Something Else?Apr 15, 2025 am 12:13 AMHTMLisnotaprogramminglanguage;itisamarkuplanguage.1)HTMLstructuresandformatswebcontentusingtags.2)ItworkswithCSSforstylingandJavaScriptforinteractivity,enhancingwebdevelopment.
HTML: Building the Structure of Web PagesApr 14, 2025 am 12:14 AMHTML 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.
From Text to Websites: The Power of HTMLApr 13, 2025 am 12:07 AMHTML 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.
Understanding HTML, CSS, and JavaScript: A Beginner's GuideApr 12, 2025 am 12:02 AMWebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.
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
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
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.
WebStorm Mac version
Useful JavaScript development 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
Zend Studio 13.0.1
Powerful PHP integrated development environment
