效果图如下：
代码如下：
1 <!DOCTYPE html> 2 <html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 3 <meta charset="UTF-8"> 4 <title>Document</title> 5 <style> 6 * { 7 margin: 0; 8 padding: 0; 9 } 10 h2 { 11 margin: 20px 0; 12 } 13 .left1 { 14 width: 200px; 15 height: 100px; 16 green; 17 } 18 .right1 { 19 width: 60%; 20 height: 100px; 21 red; 22 } 23 .left2 { 24 width: 200px; 25 height: 100px; 26 green; 27 display: inline-block; 28 } 29 .right2 { 30 width: 60%; 31 height: 100px; 32 red; 33 display: inline-block; 34 } 35 .left3 { 36 width: 200px; 37 height: 100px; 38 float: left; 39 green; 40 } 41 .right3 { 42 width: 60%; 43 height: 100px; 44 float: right; 45 red; 46 } 47 .mainL, .sitebarL, .mainR, .sitebarR { 48 height: 200px; 49 /*font: bolder 20px/200px '微软雅黑';*/ 50 color: #fff; 51 text-align: center; 52 } 53 .mainL { 54 width: 100%; 55 float: left; 56 } 57 .mainR { 58 width: 100%; 59 float: right; 60 } 61 .mainL .contentL { 62 height: 100%; 63 margin-right: 200px; 64 red; 65 } 66 .mainR .contentR { 67 height: 100%; 68 margin-left: 200px; 69 red; 70 } 71 .contentLR { 72 height: 100%; 73 margin-left: 200px; 74 margin-right: 200px; 75 red; 76 } 77 .sitebarL { 78 width: 200px; 79 float: left; 80 margin-right: -100%; 81 green; 82 } 83 .sitebarR { 84 width: 200px; 85 float: right; 86 margin-left: -100%; 87 green; 88 } 89 .clear { 90 width: 100%; 91 clear: both; 92 height: 10px; 93 } 94 #left { 95 float: left; 96 width: 200px; 97 height: 100px; 98 green; 99 }100 101 #contentL {102 height: 100px;103 red;104 margin-left: 200px;/*==等于右边栏宽度==*/105 }106 #right {107 float: right;108 width: 200px;109 height: 100px;110 green;111 }112 113 #contentR {114 height: 100px;115 red;116 margin-right: 200px;/*==等于左边栏宽度==*/117 }118 #contentLR {119 height: 100px;120 red;121 margin: 0 200px;122 }123 .cont {124 overflow: hidden;125 }126 </style>127 </head>128 <body>129 <h2 id="普通文档布局">普通文档布局</h2>130 <div class="left1">Left</div>131 <div class="right1">Right</div>132 <div class="clear"></div>133 134 135 <h2 id="行内布局使用inline-block">行内布局使用inline-block</h2>136 <div class="left2">Left</div>137 <div class="right2">Right</div>138 <div class="clear"></div>139 140 141 <h2 id="浮动布局float">浮动布局float</h2>142 <div class="left3">Left:<br>143 width: 200px;<br>144 height: 100px;<br>145 float: left;<br>146 green;147 </div>148 <div class="right3">Right<br>149 width: 60%;<br>150 height: 100px;<br>151 float: right;<br>152 red;153 </div>154 <div class="clear"></div>155 156 157 <h2 id="浮动布局float-margin正边距与多列布局">浮动布局float+margin正边距与多列布局</h2>158 <h3 id="两列">两列</h3>159 <div id="left">160 Left Sidebar<br>161 float: left;<br>162 width: 200px;<br>163 height: 100px;<br>164 green;<br>165 </div>166 <div id="contentL">167 height: 100px;168 red;169 margin-left: 200px;/*==等于左边栏宽度==*/170 <div id="contentInner">171 Main Content172 </div>173 </div>174 <div class="clear"></div>175 <div id="right">176 Right Sidebar<br>177 float: right;<br>178 width: 200px;<br>179 height: 100px;<br>180 green;181 </div>182 <div id="contentR">183 height: 100px;184 red;185 margin-right: 200px;/*==等于右边栏宽度==*/186 <div id="contentInner">187 Main Content188 </div>189 </div>190 <div class="clear"></div>191 <h3 id="三列">三列</h3>192 <div id="left">193 Left Sidebar<br>194 float: left;<br>195 width: 200px;<br>196 height: 100px;<br>197 green;<br>198 </div>199 <div id="right">200 Right Sidebar<br>201 float: right;<br>202 width: 200px;<br>203 height: 100px;<br>204 green;205 </div>206 <div id="contentLR">207 <div id="contentInner">208 Main Content<br>209 height: 100px;<br>210 red;<br>211 margin: 0 200px;<br>212 </div>213 </div>214 215 216 <h2 id="浮动布局float-margin负边距与多列布局">浮动布局float+margin负边距与多列布局</h2>217 <h3 id="两列">两列</h3>218 <div class="sitebarL">219 <h4 id="左侧定宽-px区块">左侧定宽200px区块</h4>220 <p>width: 200px;221 float: left;222 margin-right: -100%;223 green;224 </p>225 </div>226 <div class="mainR">227 <div class="contentR">228 <h4 id="右侧主体自适应区块">右侧主体自适应区块</h4>229 <p>.mainR:width: 100%;230 float: right;</p>231 <p>.contentR:height: 100%;232 margin-left: 200px;233 red;234 </p>235 </div>236 </div>237 <div class="clear"></div>238 <div class="mainL">239 <div class="contentL">240 <h4 id="左侧主体自适应区块">左侧主体自适应区块</h4>241 <p>.mainL:width: 100%;242 float: left;</p>243 <p>.contentL:height: 100%;244 margin-right: 200px;245 red;</p>246 </div>247 </div>248 <div class="sitebarR">249 <h4 id="右侧定宽-px区块">右侧定宽200px区块</h4><h4 id="p-width-px-float-right-margin-left-green-p">250 <p>width: 200px;251 float: right;252 margin-left: -100%;253 green;254 </p>255 </h4></div>256 <div class="clear"></div>257 <h3 id="三列">三列</h3>258 <div class="sitebarL">259 <h4 id="左侧定宽-px区块">左侧定宽200px区块</h4>260 <p>width: 200px;261 float: left;262 margin-right: -100%;263 green;264 </p>265 </div>266 <div class="mainL">267 <div class="contentLR">268 <h4 id="主体自适应区块">主体自适应区块</h4>269 <p>.mainR:width: 100%;270 float: left;271 </p>272 <p>.contentLR:height: 100%;273 margin-left: 200px;274 margin-right: 200px;275 red;276 </p>277 </div>278 </div>279 <div class="sitebarR">280 <h4 id="右侧定宽-px区块">右侧定宽200px区块</h4><h4 id="p-width-px-float-right-margin-left-green-p">281 <p>width: 200px;282 float: right;283 margin-left: -100%;284 green;285 </p>286 </h4></div>287 <div class="clear"></div> 288 </body></html>
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.
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.
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
Atom editor mac version download
The most popular open source editor
SublimeText3 English version
Recommended: Win version, supports code prompts!
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),
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
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.
