HTML+CSS代码橙色导航菜单_html/css_WEB-ITnose
效果预览:http://hovertree.com/code/texiao/ks63r6aq.htm
1 <!DOCTYPE html> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <title>超漂亮的HTML导航菜单CSS代码 - 何问起</title> 5 <style> 6 #top { 7 display: block; 8 text-align: left; 9 height: 105px; 10 position: relative; 11 z-index: 0; 12 } 13 14 .m { 15 margin: 0 auto; 16 width: 970px; 17 } 18 19 body { 20 font-size: 12px; 21 } 22 23 a { 24 color: #333; 25 text-decoration: none; 26 } 27 28 a:link { 29 text-decoration: none; 30 } 31 /* Download by http://hovertree.com*/ 32 a.blue:link, a.blue:visited { 33 color: #014cc9; 34 text-decoration: none; 35 } 36 37 a.blue:hover, a.blue:active { 38 color: #014cc9; 39 text-decoration: underline; 40 } 41 42 a.org:link, a.org:visited { 43 color: #ff4e00; 44 text-decoration: none; 45 } 46 47 a:hover, a:active, a.org:hover, a.org:active { 48 color: #ff4e00; 49 text-decoration: underline; 50 } 51 52 #navpart { 53 background: url(http://hovertree.com/hvtimg/bjafjb/6hcuxj1x.gif) repeat-x center top; 54 height: 105px; 55 width: 950px; 56 z-index: 0; 57 margin-top: 0; 58 margin-right: auto; 59 margin-bottom: 0; 60 margin-left: auto; 61 clear: both; 62 position: relative; 63 } 64 65 #navpart .sideleft { 66 background: url(http://hovertree.com/hvtimg/bjafjb/6hcuxj1x.gif) no-repeat left bottom; 67 float: left; 68 height: 105px; 69 width: 6px; 70 } 71 72 #navpart .sideright { 73 background: url(http://hovertree.com/hvtimg/bjafjb/6hcuxj1x.gif) no-repeat right bottom; 74 float: right; 75 height: 105px; 76 width: 6px; 77 } 78 79 #navmenubar { 80 height: 32px; 81 float: left; 82 display: inline; 83 margin: 0 -6px; 84 width: 100%; 85 position: relative; 86 z-index: 3; 87 top: 0; 88 } 89 90 #hot { 91 background: url(http://hovertree.com/hvtimg/201508/7qmwfe9p.png) no-repeat left top; 92 height: 21px; 93 width: 19px; 94 position: absolute; 95 top: -5px; 96 right: 2px; 97 z-index: 666; 98 background:black; 99 }100 101 #navmenubar .sideleft {102 background: url(http://hovertree.com/hvtimg/bjafjb/ay73nxk5.gif) no-repeat left bottom;103 float: left;104 height: 32px;105 width: 6px;106 display: inline;107 margin: 0 0 0 8px;108 }109 110 #navmenubar .sideright {111 background: url(http://hovertree.com/hvtimg/bjafjb/ay73nxk5.gif) no-repeat right bottom;112 float: left;113 height: 32px;114 width: 6px;115 display: inline;116 margin: 0 4px 0 -2px;117 }118 /* NAVMENU */119 #navmenubar .navmenu {120 background: url(http://hovertree.com/hvtimg/bjafjb/ay73nxk5.gif) repeat-x center top;121 height: 32px;122 padding: 0;123 margin: 0;124 float: left;125 display: inline;126 }127 128 #navmenubar .navmenu li {129 float: left;130 white-space: nowrap;131 margin: 0px;132 padding: 0px;133 display: inline;134 }135 136 #navmenubar .navmenu li a {137 background: url(http://hovertree.com/hvtimg/bjafjb/d46iuj2w.gif) no-repeat 0 0;138 width: 80px;139 padding: 7px 2px 5px 0;140 float: left;141 line-height: 20px;142 height: 20px;143 text-align: center;144 }145 146 #navmenubar .navmenu li a:hover {147 background-position: 0 -32px;148 color: #602800;149 text-decoration: none;150 padding: 8px 2px 4px 0;151 }152 153 #navmenubar .navmenu .current a, #navmenubar .navmenu .current a:hover {154 background: url(http://hovertree.com/hvtimg/bjafjb/d46iuj2w.gif) no-repeat 0 -64px;155 font-weight: 600;156 color: #FFF;157 font-size: 14px;158 padding: 7px 2px 5px 0;159 }160 161 #top #navpart .content {162 margin-top: 40px;163 margin-right: auto;164 margin-bottom: 0px;165 margin-left: auto;166 width: 900px;167 height: auto;168 color: white;169 }170 171 #top #navpart .content a {172 color: white;173 display: inline-block;174 margin-top: 0px;175 height: 30px;176 border: 0px solid white;177 line-height: 30px;178 padding: 10px;179 }180 181 .clear {182 clear: both;183 display: block;184 font: 0px/0 sans-serif;185 height: 0px;186 overflow: hidden;187 }188 </style>189 190 </head>191 <body>192 <div id="top" class="m">193 <div id="navpart">194 <div class="sideleft"></div>195 <div class="sideright"></div>196 <!--NavMenu-->197 <div id="navmenubar">198 <div class="sideleft"></div>199 <ul class="navmenu">200 <li class="current"><a href="http://hovertree.com" target="_top" title="首页">何问起</a></li>201 <li><a href="http://hovertree.com/"><span>编程资源</span></a></li>202 <li><a href="http://hovertree.com"><span>高质量源码</span></a></li>203 </ul>204 <div class="sideright"></div>205 <div class="sideleft"></div>206 <ul class="navmenu">207 <li><a href="http://tool.hovertree.com"><span>工具</span></a></li>208 <li><a href="http://hovertree.com/code/"><span>代码</span></a></li>209 <li><a href="http://keleyi.com"><span>jQuery教程</span></a></li>210 <li><a href="http://hovertree.com/tiku/"><span>在线题库</span></a></li>211 </ul>212 <div class="sideright"></div>213 <div>214 <div class="content">215 <a href="http://hovertree.com/" target="_blank">特效代码</a> <a href="http://hovertree.com/ziyuan/js/" target="_blank">JS运算符优先级</a>216 <a href="http://hovertree.com/code/texiao/ks63r6aq.htm" target="_blank">特效代码</a> <a href="http://hovertree.com/" target="_blank">特效代码</a> <a href="http://hovertree.com/" target="_blank">特效代码</a><a href="http://hovertree.com/hvtart/bjae/e4pya1x0.htm" target="_blank">.NET正则表达式</a>217 <a href="http://hovertree.com/" target="_blank">特效代码</a> <a href="keleyi.com/ziliao/googlejavascriptstyle.htm" target="_blank">谷歌JS风格</a> <a href="http://hovertree.com/" target="_blank">特效代码</a> <a href="http://hovertree.com/" target="_blank">特效代码</a> <a href="http://hovertree.com/h/bjaf/nebj8df9.htm" target="_blank">js实现异步循环</a>218 219 </div>220 </div>221 </div>222 </div>223 </div>224 <div class="clear"></div>225 </body>226 </html>227 228
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WebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.

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 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 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.

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, 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.

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