1 <!doctype html> 2 <html> 3 <head> 4 <title></title> 5 <meta charset='utf-8'> 6 <style type="text/css"> 7 :root,body{ 8 height: 100%; 9 width: 100%; 10 } 11 .z{ 12 width:200px; 13 height: 400px; 14 left: 400px; 15 position: absolute; 16 } 17 .z div{ 18 position: absolute; 19 20 } 21 .z .red{ 22 background-color: red; 23 box-shadow: 0px 0px 1px 0 #666; 24 } 25 .f1{ 26 width: 18px; 27 height: 18px; 28 -webkit-transform: rotate(45deg); 29 -moz-transform: rotate(45deg); 30 -ms-transform: rotate(45deg); 31 -o-transform: rotate(45deg); 32 transform: rotate(45deg); 33 top:0; 34 border-radius: 2px; 35 } 36 .l1,.l2,.l3,.l4{ 37 width:2px; 38 height: 10px; 39 } 40 .c1{ 41 width:14px; 42 height: 14px; 43 border-radius: 7px; 44 box-shadow: 0px 0px 1px 0 #666; 45 z-index: 10; 46 } 47 .c1-1 { 48 position: relative; 49 width: 40px; 50 height: 12px; 51 } 52 .c1-1:before, 53 .c1-1:after { 54 box-shadow: 0px 0px 1px 0 #666; 55 content: ""; 56 position: absolute; 57 top: 0; 58 left: 0; 59 width: 8px; 60 height: 14px; 61 border: 2px solid red; 62 border-radius:50% 50% 50% 50% / 30% 30% 70% 70%; 63 -webkit-transform: rotate(-90deg); 64 -moz-transform: rotate(-90deg); 65 -ms-transform: rotate(-90deg); 66 -o-transform: rotate(-90deg); 67 transform: rotate(-90deg); 68 } 69 70 .c1-1:after { 71 left: auto; 72 right: 0; 73 border-radius:50% 50% 50% 50% / 70% 70% 30% 30%; 74 -webkit-transform: rotate(-90deg); 75 -moz-transform: rotate(-90deg); 76 -ms-transform: rotate(-90deg); 77 -o-transform: rotate(-90deg); 78 transform: rotate(-90deg); 79 } 80 .r{ 81 width:80px; 82 height: 80px; 83 z-index: 10; 84 -webkit-transform: rotate(45deg); 85 -moz-transform: rotate(45deg); 86 -ms-transform: rotate(45deg); 87 -o-transform: rotate(45deg); 88 transform: rotate(45deg); 89 } 90 .r .ro{ 91 position: relative; 92 display: table; 93 border-collapse:separate; 94 border-spacing: 1px; 95 } 96 .r .b{ 97 width:15px; 98 height: 14px; 99 position: relative;100 display: table-cell;101 border-radius: 2px;102 }103 .c2{104 width:10px;105 height: 10px;106 border-radius: 5px;107 }108 .c3{109 width:10px;110 height: 10px;111 border-radius: 5px 5px 0 0;112 }113 .c4{114 width:14px;115 height: 14px;116 border-radius: 8px;117 z-index: 10;118 }119 .k{120 width: 10px;121 height: 12px;122 }123 .k1{124 width: 14px;125 height: 6px;126 }127 .s{128 height: 150px;129 display: table;130 border-collapse:separate;131 border-spacing: 1px;132 }133 .ss{134 width: 1px;135 height: 100%;136 position: relative !important;137 display: table-cell;138 }139 .i1 {140 position: relative;141 width: 162px;142 height: 46px;143 }144 145 .i1:before,146 .i1:after {147 box-shadow: 0px 0px 1px 0 #666;148 content: "";149 position: absolute;150 top: 0;151 left: 0;152 width: 30px;153 height: 40px; 154 border: 3px solid red;155 border-radius:50% 50% 50% 50% / 30% 30% 70% 70%;156 -webkit-transform: rotate(-90deg);157 -moz-transform: rotate(-90deg);158 -ms-transform: rotate(-90deg);159 -o-transform: rotate(-90deg);160 transform: rotate(-90deg);161 }162 163 .i1:after,.i2:after {164 left: auto;165 right: 0;166 border-radius:50% 50% 50% 50% / 70% 70% 30% 30%;167 -webkit-transform: rotate(-90deg);168 -moz-transform: rotate(-90deg);169 -ms-transform: rotate(-90deg);170 -o-transform: rotate(-90deg);171 transform: rotate(-90deg);172 } 173 .i2 {174 position: relative;175 width: 136px;176 height: 24px;177 }178 .i2:before,179 .i2:after {180 box-shadow: 0px 0px 1px 0 #666;181 content: "";182 position: absolute;183 top: 0;184 left: 0;185 width: 12px;186 height: 20px; 187 border: 2px solid red;188 border-radius:50% 50% 50% 50% / 30% 30% 70% 70%;189 -webkit-transform: rotate(-90deg);190 -moz-transform: rotate(-90deg);191 -ms-transform: rotate(-90deg);192 -o-transform: rotate(-90deg);193 transform: rotate(-90deg);194 }195 196 .i2:after {197 left: auto;198 right: 0;199 border-radius:50% 50% 50% 50% / 70% 70% 30% 30%;200 -webkit-transform: rotate(-90deg);201 -moz-transform: rotate(-90deg);202 -ms-transform: rotate(-90deg);203 -o-transform: rotate(-90deg);204 transform: rotate(-90deg);205 } 206 .e1 {207 position: relative;208 width: 12px;209 height: 24px;210 }211 .e1:before,212 .e1:after {213 box-shadow: 0px 0px 1px 0 #666;214 content: "";215 position: absolute;216 top: 0;217 left: 0;218 width: 12px;219 height: 20px; 220 border: 2px solid red;221 border-radius:50% 50% 50% 50% / 30% 30% 70% 70%;222 -webkit-transform: rotate(-90deg);223 -moz-transform: rotate(-90deg);224 -ms-transform: rotate(-90deg);225 -o-transform: rotate(-90deg);226 transform: rotate(-90deg);227 }228 .m{229 width:80px;230 height: 80px;231 -webkit-transform: rotate(45deg);232 -moz-transform: rotate(45deg);233 -ms-transform: rotate(45deg);234 -o-transform: rotate(45deg);235 transform: rotate(45deg);236 237 }238 .n{239 width:80px;240 height: 80px;241 -webkit-transform: rotate(-45deg);242 -moz-transform: rotate(-45deg);243 -ms-transform: rotate(-45deg);244 -o-transform: rotate(-45deg);245 transform: rotate(-45deg);246 247 }248 .m .rx,.n .rx{249 position: relative;250 display: table;251 border-collapse:separate;252 border-spacing: 1px;253 }254 .m .rb , .m .rb-space,.n .rb , .n .rb-space{255 position: relative;256 width: 120px;257 height: 14px;258 display: table-cell;259 }260 261 .m .rb:before,262 .m .rb:after,.n .rb:before,263 .n .rb:after {264 box-shadow: 0px 0px 1px 0 #666;265 content: "";266 position: absolute;267 top: 0;268 left: -8px;269 width: 6px;270 height: 10px; 271 border: 2px solid red;272 border-radius:50% 50% 50% 50% / 40% 40% 60% 60%;273 -webkit-transform: rotate(-90deg);274 -moz-transform: rotate(-90deg);275 -ms-transform: rotate(-90deg);276 -o-transform: rotate(-90deg);277 transform: rotate(-90deg);278 }279 280 .m .rb:after,.n .rb:after{281 left: auto;282 right: -8px;283 border-radius:50% 50% 50% 50% / 60% 60% 60% 60%;284 -webkit-transform: rotate(-90deg);285 -moz-transform: rotate(-90deg);286 -ms-transform: rotate(-90deg);287 -o-transform: rotate(-90deg);288 transform: rotate(-90deg);289 } 290 </style>291 <script type="text/javascript" src='../bower_components/jquery/dist/jquery.js'></script>292 <script type="text/javascript">293 $(document).ready(function(){294 var $z = $('.z'), $f1 = $('.f1') , $l1 = $('.l1') , $c1 = $('.c1') , $l2 = $('.l2') , $r = $('.r') , $l3 = $('.l3') , $c2 = $('.c2') , $l4 = $('.l4') , $c3 = $('.c3') , $c4 = $('.c4'),295 $k = $('.k') , $k1 = $('.k1') , $s = $('.s') , $i1 = $('.i1') , $i2 = $('.i2'),296 $e1 = $('.e1') , $c1_1 = $('.c1-1'),297 $m = $('.m') , $n = $('.n');298 $f1.css({299 left : ($z.width() - $f1.width()) / 2 , 300 top : Math.sqrt(2 * Math.pow($f1.height() / 2 , 2)) - $f1.height() / 2301 });302 $l1.css({303 left : ($z.width() - $l1.width()) / 2,304 top : Math.sqrt(2 * Math.pow($f1.height() , 2))305 });306 $c1.css({307 left : ($z.width() - $c1.width()) / 2,308 top : Math.sqrt(2 * Math.pow($f1.height() , 2)) + $l1.height()309 });310 $l2.css({311 left : ($z.width() - $l2.width()) / 2,312 top : Math.sqrt(2 * Math.pow($f1.height() , 2)) + 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Math.pow($f1.height() , 2)) + $l1.height() + $c1.height() + $l2.height() + Math.sqrt(2 * Math.pow($r.height() , 2)) + $l3.height() + $c2.height() + $l4.height()333 });334 $c4.css({335 left : ($z.width() - $c4.width()) / 2,336 top : Math.sqrt(2 * Math.pow($f1.height() , 2)) + $l1.height() + $c1.height() + $l2.height() + Math.sqrt(2 * Math.pow($r.height() , 2)) + $l3.height() + $c2.height() + $l4.height() + $c3.height() - 4337 });338 $k.css({339 left : ($z.width() - $k.width()) / 2,340 top : Math.sqrt(2 * Math.pow($f1.height() , 2)) + $l1.height() + $c1.height() + $l2.height() + Math.sqrt(2 * Math.pow($r.height() , 2)) + $l3.height() + $c2.height() + $l4.height() + $c3.height() - 4 + $c4.height() - 4341 });342 $k1.css({343 left : ($z.width() - $k1.width()) / 2,344 top : Math.sqrt(2 * Math.pow($f1.height() , 2)) + $l1.height() + $c1.height() + $l2.height() + Math.sqrt(2 * Math.pow($r.height() , 2)) + $l3.height() + $c2.height() + $l4.height() + $c3.height() - 4 + $c4.height() - 4 + $k.height()345 });346 $s.css({347 left : ($z.width() - $k1.width()) / 2,348 top : Math.sqrt(2 * Math.pow($f1.height() , 2)) + $l1.height() + $c1.height() + $l2.height() + Math.sqrt(2 * Math.pow($r.height() , 2)) + $l3.height() + $c2.height() + $l4.height() + $c3.height() - 4 + $c4.height() - 4 + $k.height() + $k1.height()349 });350 351 $i1.css({352 left : ($z.width() - $i1.width()) / 2,353 top : Math.sqrt(2 * Math.pow($f1.height() , 2)) + $l1.height() + $c1.height() + $l2.height() + Math.sqrt(2 * Math.pow($r.height() , 2)) / 2 - $i1.height() / 2354 });355 $i2.css({356 left : ($z.width() - $i2.width()) / 2,357 top : Math.sqrt(2 * Math.pow($f1.height() , 2)) + $l1.height() + $c1.height() + $l2.height() + Math.sqrt(2 * Math.pow($r.height() , 2)) / 2 - $i2.height() / 2358 });359 $c1_1.css({360 left : ($z.width() - $c1_1.width()) / 2,361 top : Math.sqrt(2 * Math.pow($f1.height() , 2)) + $l1.height() + ($c1_1.height() - $c1.height()) / 2362 });363 $m.css({364 left : ($z.width() - $m.width()) / 2,365 top : Math.sqrt(2 * Math.pow($f1.height() , 2)) + $l1.height() + $c1.height() + $l2.height() + Math.sqrt(2 * Math.pow($m.height() / 2 , 2)) - $m.height() / 2366 });367 $n.css({368 left : ($z.width() - $n.width()) / 2,369 top : Math.sqrt(2 * Math.pow($f1.height() , 2)) + $l1.height() + $c1.height() + $l2.height() + Math.sqrt(2 * Math.pow($n.height() / 2 , 2)) - $n.height() / 2370 });371 });372 </script>373 </head>374 <body>375 <div class='z'>376 <div class='f1 red'></div>377 <div class='l1 red'></div>378 <div class='c1 red'></div>379 <div class='c1-1'></div>380 <div class='l2 red'></div>381 <div class='r'>382 <div class='ro'>383 <div class='b red'></div>384 <div class='b red'></div>385 <div class='b red'></div>386 <div class='b red'></div>387 <div class='b red'></div>388 </div>389 <div class='ro'>390 <div class='b red'></div>391 <div class='b red'></div>392 <div class='b red'></div>393 <div class='b red'></div>394 <div class='b red'></div>395 </div>396 <div class='ro'>397 <div class='b red'></div>398 <div class='b red'></div>399 <div class='b red'></div>400 <div class='b red'></div>401 <div class='b red'></div>402 </div>403 <div class='ro'>404 <div class='b red'></div>405 <div class='b red'></div>406 <div class='b red'></div>407 <div class='b red'></div>408 <div class='b red'></div>409 </div>410 <div class='ro'>411 <div class='b red'></div>412 <div class='b red'></div>413 <div class='b red'></div>414 <div class='b red'></div>415 <div class='b red'></div>416 </div>417 </div>418 <div class='l3 red'></div>419 <div class='c2 red'></div>420 <div class='l4 red'></div>421 <div class='c3 red'></div>422 <div class='c4 red'></div>423 <div class='k red'></div>424 <div class='k1 red'></div>425 <div class='s'>426 <div class='ss red'></div>427 <div class='ss red'></div>428 <div class='ss red'></div>429 <div class='ss red'></div>430 <div class='ss red'></div>431 <div class='ss red'></div>432 <div class='ss red'></div>433 </div>434 <div class='i1'></div>435 <div class='i2'></div>436 <div class='m'>437 <div class='rx'>438 <div class='rb-space'></div>439 </div>440 <div class='rx'>441 <div class='rb'></div>442 </div>443 <div class='rx'>444 <div class='rb'></div>445 </div>446 <div class='rx'>447 <div class='rb'></div>448 </div>449 <div class='rx'>450 <div class='rb-space'></div>451 </div>452 </div>453 <div class='n'>454 <div class='rx'>455 <div class='rb-space'></div>456 </div>457 <div class='rx'>458 <div class='rb'></div>459 </div>460 <div class='rx'>461 <div class='rb'></div>462 </div>463 <div class='rx'>464 <div class='rb'></div>465 </div>466 <div class='rx'>467 <div class='rb-space'></div>468 </div>469 </div>470 </div>471 </body>472 </html>

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.

HTML 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.

WebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.

The role of HTML is to define the structure and content of a web page through tags and attributes. 1. HTML organizes content through tags such as , making it easy to read and understand. 2. Use semantic tags such as, etc. to enhance accessibility and SEO. 3. Optimizing HTML code can improve web page loading speed and user experience.


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