网页学习(部分)CSS_html/css_WEB-ITnose
layout.css
.col1, .col2, .col3, .cols {float:left}.col1 {padding-left:37px;width:287px}.col2 {padding-left:42px;width:557px}.cols {width:263px}#page4 .cols {width:155px}#page4 .marg_right1 {margin-right:41px}#page5 .cols {width:256px}#page5 .pad_left1 {padding-left:40px}#page6 .cols {width:68px}#page6 .col2 {width:560px}
reset.css
a, abbr, acronym, address, applet, article, aside, audio, b, blockquote, big, body, center, canvas, caption, cite, code, command, datalist, dd, del, details, dfn, dl, div, dt, em, embed, fieldset, figcaption, figure, font, footer, form, h1, h2, h3, h4, h5, h6, header, hgroup, html, i, iframe, img, ins, kbd, keygen, label, legend, li, meter, nav, object, ol, output, p, pre, progress, q, s, samp, section, small, span, source, strike, strong, sub, sup, table, tbody, tfoot, thead, th, tr, tdvideo, tt, u, ul, var {background:transparent;border:0 none;font-size:100%;margin:0;padding:0;border:0;outline:0;vertical-align:top}ol, ul {list-style:none}blockquote, q {quotes:none}table, table td {padding:0;border:none;border-collapse:collapse}img {vertical-align:top}embed {vertical-align:top}* {border:none}
style.css
/* Getting the new tags to behave */article, aside, audio, canvas, command, datalist, details, embed, figcaption, figure, footer, header, hgroup, keygen, meter, nav, output, progress, section, source, video {display:block}mark, rp, rt, ruby, summary, time {display:inline}/* Left & Right alignment */.left {float:left}.right {float:right}.wrapper {width:100%;overflow:hidden}.relative {position:relative}* +html .relative {position:static}/* Global properties */body {background:url(../images/bg_img.jpg) top center no-repeat #000;border:0;font:13px Arial, Helvetica, sans-serif;color:#3a3a3a;line-height:20px;min-width:980px;padding:10px 0}.ic, .ic a {border:0;float:right;background:#fff;color:#f00;width:50%;line-height:10px;font-size:10px;margin:-220% 0 0 0;overflow:hidden;padding:0}.css3 {border-radius:8px;-moz-border-radius:8px;-webkit-border-radius:8px;box-shadow:0 0 4px rgba(0, 0, 0, .4);-moz-box-shadow:0 0 4px rgba(0, 0, 0, .4);-webkit-box-shadow:0 0 4px rgba(0, 0, 0, .4);position:relative}/* Global Structure */.main {margin:0 auto;width:960px;padding:10px;background:#fff;box-shadow:0 0 7px rgba(0, 0, 0, .2);-moz-box-shadow:0 0 7px rgba(0, 0, 0, .2);-webkit-box-shadow:0 0 7px rgba(0, 0, 0, .2);position:relative}/* main layout */a {color:#1d77e9;text-decoration:underline;outline:none}a:hover {text-decoration:none}h1 {padding:27px 0 0 41px;float:left}h2 {font-size:20px;line-height:1.2em;padding:12px 32px 16px 32px;margin-bottom:14px;background:#f7f7f7;position:relative;letter-spacing:-1px}h2.top {border-radius:6px 6px 0 0;-moz-border-radius:6px 6px 0 0;-webkit-border-radius:6px 6px 0 0}h3 {font-size:30px;color:#000;line-height:1.2em;margin-top:-4px;letter-spacing:-1px;padding:0 0 21px 0}h3 span {font-size:20px;color:#767676;line-height:1.2em;display:block;margin-top:-5px}h4 {font-size:20px;color:#000;line-height:1.2em;padding:0 0 14px 0;letter-spacing:-1px}p {padding-bottom:18px}/* header */header {height:230px;width:100%;overflow:hidden;background:url(../images/bg_top.jpg) 0 0 no-repeat}#logo {display:block;background:url(../images/logo.png) 0 0 no-repeat;width:120px;height:104px;text-indent:-9999px}#slogan {font-size:20px;line-height:1.2em;color:#fff;float:left;padding:95px 0 0 18px;letter-spacing:-1px}#top_nav {float:right;padding:38px 56px 0 0}#top_nav li {float:left;padding-left:25px;width:50px;text-align:center}#top_nav li a {display:inline-block;padding-top:13px;color:#fff}.nav1 {background:url(../images/img_top1.gif) center 0 no-repeat}.nav2 {background:url(../images/img_top2.gif) center 0 no-repeat}.nav3 {background:url(../images/img_top3.gif) center 0 no-repeat}#menu {padding:27px 0 0 42px}#menu li {float:left;margin-left:-1px;background:url(../images/menu_line.gif) bottom right no-repeat}#menu .end {background:none}#menu li a {display:block;height:71px;font-size:26px;line-height:71px;color:#fff;text-decoration:none;letter-spacing:-1px}#menu li a span {display:block}#menu li a span span {padding:0 32px;margin:0 6px}#menu li a:hover, #menu #menu_active a {background:url(../images/menu_left.png) top left no-repeat;color:#000}#menu li a:hover span, #menu #menu_active a span {background:url(../images/menu_right.png) top right no-repeat}#menu li a:hover span span, #menu #menu_active a span span {background:url(../images/menu_bg.gif) top repeat-x}/* content */#content {width:100%;overflow:hidden;padding-bottom:14px}.for_banners {background:url(../images/bg_top_img.jpg) 0 0 no-repeat;width:100%;height:342px;padding-top:30px}.pad1 {padding:30px 0;background:url(../images/bg_top2.jpg) 0 0 no-repeat}#page1 .pad1 {background:none}.pad {padding:0 27px 0 32px}.pad_bot1 {padding-bottom:10px}.pad_bot2 {padding-bottom:15px}.pad_bot3 {padding-bottom:32px}.pad_left1 {padding-left:31px}.pad_top1 {padding-top:11px}.marg_right1 {margin-right:31px}/* tabs begin */.tabs {position:relative}.tabs ul.nav {position:absolute;top:0}.tabs ul.nav li {float:left;padding-right:1px;width:95px}.tabs ul.nav .end {padding-right:0}.tabs ul.nav li a {color:#fff;text-align:center;display:block;background:url(../images/tabs.gif) 0 0 repeat-x #30c1fd;line-height:42px;text-decoration:none;border-radius:6px 6px 0 0;-moz-border-radius:6px 6px 0 0;-webkit-border-radius:6px 6px 0 0; box-shadow:0 0 3px #d0d0d0;-moz-box-shadow:0 0 3px #d0d0d0;-webkit-box-shadow:0 0 3px #d0d0d0;position:relative;overflow:hidden}.tabs ul.nav li a:hover, .tabs ul.nav .selected a {color:#000;background:url(../images/tabs_active.gif) top repeat-x #e7e6e6}.tabs .content {background:#fff;border-radius:0 0 6px 6px;-moz-border-radius:0 0 6px 6px ;-webkit-border-radius:0 0 6px 6px ; box-shadow:0 0 3px #d0d0d0;-moz-box-shadow:0 0 3px #d0d0d0;-webkit-box-shadow:0 0 3px #d0d0d0;position:relative;padding:1px;top:40px;padding-bottom:20px}.tabs .tab-content {}/* tabs end *//* tabs begin */.tabs2 {position:relative}.tabs2 ul.nav {position:absolute;top:0}.tabs2 ul.nav li {float:left;padding-right:1px;width:185px}.tabs2 ul.nav .end {padding-right:0}.tabs2 ul.nav li a {color:#fff;text-align:center;display:block;background:url(../images/tabs.gif) 0 0 repeat-x #30c1fd;line-height:42px;text-decoration:none;border-radius:6px 6px 0 0;-moz-border-radius:6px 6px 0 0;-webkit-border-radius:6px 6px 0 0; box-shadow:0 0 3px #d0d0d0;-moz-box-shadow:0 0 3px #d0d0d0;-webkit-box-shadow:0 0 3px #d0d0d0;position:relative;overflow:hidden}.tabs2 ul.nav li a:hover, .tabs2 ul.nav .selected a {color:#000;background:url(../images/tabs_active.gif) top repeat-x #e7e6e6}.tabs2 .content {background:#fff;border-radius:0 0 6px 6px;-moz-border-radius:0 0 6px 6px ;-webkit-border-radius:0 0 6px 6px ; box-shadow:0 0 3px #d0d0d0;-moz-box-shadow:0 0 3px #d0d0d0;-webkit-box-shadow:0 0 3px #d0d0d0;position:relative;padding:1px;top:40px;padding-bottom:20px}.tabs2 .tab-content {}/* tabs end *//* The Nivo Slider styles */#slider {height:114px;overflow:hidden;width:561px !important;margin-top:200px;margin-left:40px;float:left}.nivoSlider {position:relative}.nivoSlider img {position:absolute;top:0px;left:0px}/* If an image is wrapped in a link */.nivoSlider a.nivo-imageLink {position:absolute;top:0px;left:0px;width:100%;height:100%;border:0;padding:0;margin:0;z-index:60;display:none}.nivo-slice {display:block;position:absolute;z-index:50;height:100%}.aToolTip {border:1px solid #000;background:url(../images/opacity_50_black.png) repeat;color:#fff;margin:0;padding:2px 10px;font-size:11px}.aToolTip .aToolTipContent {position:relative;margin:0;padding:0}.button1 {display:inline-block;font-size:13px;color:#fff;text-decoration:none;line-height:28px;height:30px;padding:0 19px;background:url(../images/button_1.gif) 0 0px repeat-x #1d77e9;border-radius:5px;-moz-border-radius:5px ;-webkit-border-radius:5px ;position:relative;cursor:pointer}.button1 strong {display:block;padding-right:16px;background:url(../images/marker_2.gif) right 10px no-repeat}.button1:hover {background:url(../images/button_active.gif) 0 0 repeat-x #e7e6e6}.button1:hover strong {background:url(../images/marker_1.gif) right 10px no-repeat;color:#1d77e9}.link1 {padding-left:13px;background:url(../images/marker_1.gif) 0 6px no-repeat;display:inline-block}.box1 {background:#fff;border-radius:6px;-moz-border-radius:6px;-webkit-border-radius:6px;box-shadow:0 0 3px #d0d0d0;-moz-box-shadow:0 0 3px #d0d0d0;-webkit-box-shadow:0 0 3px #d0d0d0;position:relative;padding:1px}.color1 {color:#7f7f7f}.list1 li {width:100%;overflow:hidden}.list1 li a {padding-left:11px;background:url(../images/marker_1.gif) 0 4px no-repeat}.calendar {width:100%;overflow:hidden;font-size:12px;color:#000;line-height:18px;text-align:center;padding-bottom:4px}.calendar .thead li {float:left;width:27px;padding-right:1px;padding-bottom:2px}.calendar .tbody li {float:left;padding-right:1px;width:27px;padding-bottom:1px}.calendar .tbody li a {display:block;border:1px solid #e5e5e5;height:18px;color:#000;text-decoration:none}.calendar .tbody li a.active {border:1px solid #1d77e9;background:#1d77e9;color:#fff}.calendar .tbody li a.selected {background:#cccccc;border:1px solid #b7b7b7}.box2 {background:#f7f7f7;padding:14px 32px;color:#000;margin-bottom:14px;font-size:12px}.box2.top {border-radius:6px 6px 0 0;-moz-border-radius:6px 6px 0 0;-webkit-border-radius:6px 6px 0 0}.box2 strong {font-size:13px}footer {padding:33px 0 37px 70px;background:url(../images/bg_footer.gif) top repeat-x #d7dce6;font-size:12px;color:#3a3a3a}footer a {color:#1d77e9}footer a:hover {}#icons {float:left;padding-top:7px}#icons li {float:left;padding-right:9px}.links {padding-left:186px;width:310px;text-align:center;float:left}.jqTransformInputWrapper {float:left;width:auto !important}.jqTransformInputWrapper div {float:left}.jqTransformRadioWrapper {float:left;display:block;margin-right:7px;margin-top:4px}.jqTransformRadio {height:12px;width:12px;display:block;background:url(../images/radio.png);background-position:bottom/*display:-moz-inline-block;*/}.jqTransformRadio.jqTransformChecked {background-position:top}.jqTransformCheckboxWrapper {float:left;display:block;margin-right:7px;margin-top:4px}.jqTransformCheckbox {height:12px;width:12px;display:block;background:url(../images/check.gif);background-position:bottom/*display:-moz-inline-block;*/}.jqTransformCheckbox.jqTransformChecked {background-position:top}.jqTransformSelectWrapper {position:relative}.jqTransformSelectWrapper div {float:left;font:12px Arial, Helvetica, sans-serif;color:#7f7f7f;display:block;position:relative;white-space:nowrap;height:19px;line-height:19px;overflow:hidden;cursor:pointer;border:1px solid #e5e5e5;background:#fff}.jqTransformSelectWrapper div span {padding:0 0 0 7px;display:block}a.jqTransformSelectOpen {display:block;position:absolute;top:0px;right:0px;width:17px;height:18px;background:url(../images/select.gif) 4px 6px no-repeat}.jqTransformSelectWrapper ul {position:absolute;top:20px;left:0px;background:#fff;border:1px solid #e5e5e5;font:12px Arial, Helvetica, sans-serif;display:none;z-index:10; padding:5px 0 2px 0;height:50px;overflow:auto;min-height:20px}.jqTransformSelectWrapper ul a {display:block;padding:0 7px;text-decoration:none;color:#7f7f7f}.jqTransformSelectWrapper ul a.selected {color:#7f7f7f}.jqTransformSelectWrapper ul a:hover, .jqTransformSelectWrapper ul a.selected:hover {color:#fff;background:#1d77e9; }/* Hidden - used to hide the original form elements */.jqTransformHidden {display:none}#form_1 .right.relative {margin-top:9px;margin-right:32px}#form_1 .link1 {margin-left:32px;margin-top:13px}#form_1 .radio {background:#f7f7f7;padding:14px 32px;margin-bottom:14px}#form_1 .radio .left {width:88px;padding-left:0}#form_1 .row {min-height:25px;width:100%;overflow:hidden}#form_1 .left {width:64px;padding-left:31px}#form_1 .input, #form_1 .input1, #form_1 .input2 {background:#fff;border:1px solid #e5e5e5;font:12px Arial, Helvetica, sans-serif;color:#7f7f7f;float:left;padding:2px 7px;height:14px;width:142px !important}#form_1 .input1 {width:60px !important}#form_1 .input2 {width:11px !important}#form_1 .col1 {width:177px;padding-left:0}#form_1 .marg_top1 {margin-top:12px}#form_1 .pad_left1 {padding-left:9px}#form_2 .radio {background:#f7f7f7;padding:14px 32px;margin-bottom:14px}#form_2 .left {width:64px;padding-left:31px}#form_2 .row {min-height:25px;width:100%;overflow:hidden}#form_2 .input, #form_2 .input1, #form_2 .input2 {background:#fff;border:1px solid #e5e5e5;font:12px Arial, Helvetica, sans-serif;color:#7f7f7f;float:left;padding:2px 7px;height:14px;width:142px !important}#form_2 .input1 {width:60px !important}#form_2 .input2 {width:11px !important}#form_2 .right.relative {margin-top:9px;margin-right:32px}#form_2 .link1 {margin-left:32px;margin-top:13px}#form_2 .pad_left1 {padding-left:9px}#form_2 .help {float:left;margin-left:5px;width:20px;height:20px;background:url(../images/help.gif) 0 0 no-repeat}#form_3 .radio {background:#f7f7f7;padding:14px 32px;margin-bottom:14px}#form_3 .radio .left {width:88px;padding-left:0}#form_3 .row {min-height:25px;width:100%;overflow:hidden}#form_3 .row_select {min-height:25px;width:100%}#form_3 .left {width:94px;padding-left:31px}#form_3 .input, #form_3 .input1, #form_3 .input2 {background:#fff;border:1px solid #e5e5e5;font:12px Arial, Helvetica, sans-serif;color:#7f7f7f;float:left;padding:2px 7px;height:14px;width:112px !important}#form_3 .input1 {width:60px !important}#form_3 .input2 {width:31px !important;margin-left:5px}#form_3 .jqTransformSelectWrapper {float:left;width:128px !important}#form_3 .jqTransformSelectWrapper span {float:left;width:119px !important}#form_3 .pad_left1 {padding-left:32px}#form_3 .select1 {height:30px}#form_3 .select1 .jqTransformSelectWrapper {float:left;width:221px !important}#form_3 .select1 .jqTransformSelectWrapper span {float:left;width:212px !important}#form_3 .right.relative {margin-top:9px;margin-right:32px}#form_4 {padding-top:1px;padding-bottom:19px}#form_4 .right.relative {margin-top:9px;margin-right:32px}#form_4 .link1 {margin-left:32px;margin-top:13px}#form_4 .row {min-height:25px;width:100%;overflow:hidden}#form_4 .left {width:95px;padding-left:31px}#form_4 .input, #form_4 .input1, #form_4 .input2 {background:#fff;border:1px solid #e5e5e5;font:12px Arial, Helvetica, sans-serif;color:#7f7f7f;float:left;padding:2px 7px;height:14px;width:111px !important}#form_4 .input1 {width:60px !important}#form_4 .input2 {width:11px !important}#form_4 .col1 {width:177px;padding-left:0}#form_4 .marg_top1 {margin-top:12px}#form_4 .pad_left1 {padding-left:9px}.form_5 .right.relative {margin-top:16px;margin-right:4px}.form_5 .link1 {margin-left:32px;margin-top:13px}.form_5 .radio {background:#f7f7f7;padding:14px 32px;margin-bottom:14px}.form_5 .radio .left {width:108px;padding-left:0}.form_5 .row {min-height:25px;width:100%;overflow:hidden}.form_5 .left {width:74px}.form_5 .input, .form_5 .input1, .form_5 .input2 {background:#fff;border:1px solid #e5e5e5;font:12px Arial, Helvetica, sans-serif;color:#7f7f7f;float:left;padding:2px 7px;height:14px;width:112px !important}.form_5 .input1 {width:60px !important;margin-right:6px}.form_5 .input2 {width:11px !important}.form_5 .col1 {width:247px;padding-left:0}.form_5 .check_box {padding-left:20px;float:left;padding-top:25px}.form_5 .check_box span {float:left}.form_5 .marg_top1 {margin-top:5px}.form_5 .pad_left1 {padding-left:9px}.form_5 .help {float:left;margin-left:5px;width:20px;height:20px;background:url(../images/help.gif) 0 0 no-repeat}.form_5 .under {border-bottom:1px solid #f2f2f2;padding-bottom:14px;margin-bottom:13px}.form_5 .cols {width:196px}.form_5 .marg_right1 {margin-right:27px}.form_5 h6 {line-height:23px;padding-left:32px;background:url(../images/marker_3.gif) 0 0 no-repeat;font-weight:normal;padding-bottom:18px}.form_5 h5 {line-height:23px;padding-left:32px;background:url(../images/marker_4.gif) 0 0 no-repeat;font-weight:normal;padding-bottom:18px}.form_5 .marker_left {float:left;background:url(../images/marker_left.gif) 0 0 no-repeat;width:20px;height:20px;margin-right:17px}.form_5 .marker_right {float:left;background:url(../images/marker_right.gif) 0 0 no-repeat;width:20px;height:20px;margin-left:17px}.form_5 .select1 {height:25px}.form_5 .select1 .jqTransformSelectWrapper {float:left;width:121px !important}.form_5 .select1 .jqTransformSelectWrapper span {float:left;width:112px !important}.form_5 .cols .left {width:49px;padding-left:9px}.form_5 .cols .select1 {height:25px}.form_5 .cols .select1 .left {width:45px;padding-left:0px}#form_8 .col2 {width:300px;padding-left:0}#form_8 .col2 .left {width:55px;padding-left:9px}#form_8 .pad_bot2 {padding-bottom:20px}#form_8 .markers {padding:14px 0 5px 0;width:100%;overflow:hidden}#form_8 .markers span {float:left;padding:0 13px 0 9px;font-size:12px}#form_8 .markers span.end {padding-right:0}#form_8 .markers strong {float:left;width:18px;height:18px;border:1px solid #e5e5e5}#form_8 .markers strong.active {background:#1d77e9;border:1px solid #1d77e9}#form_8 .markers strong.selected {background:#ccc;border:1px solid #b7b7b7}#form_8 {padding-bottom:23px}#ContactForm {padding-top:3px}#ContactForm span {width:65px;float:left}#ContactForm .wrapper {min-height:25px}#ContactForm .textarea_box {min-height:470px;padding-bottom:6px;width:100%;overflow:hidden}#ContactForm {}#ContactForm a {margin-left:10px;float:right}#ContactForm .input {float:left;width:219px;background:#fff;border:1px solid #e5e5e5;font:12px Arial, Helvetica, sans-serif;color:#7f7f7f;float:left;padding:2px 7px;height:14px}#ContactForm textarea {overflow:auto;width:479px;background:#fff;border:1px solid #e5e5e5;font:12px Arial, Helvetica, sans-serif;color:#7f7f7f;float:left;padding:2px 7px;height:457px;margin:0;float:left}

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HTML的未来趋势是语义化和Web组件,CSS的未来趋势是CSS-in-JS和CSSHoudini,JavaScript的未来趋势是WebAssembly和Serverless。1.HTML的语义化提高可访问性和SEO效果,Web组件提升开发效率但需注意浏览器兼容性。2.CSS-in-JS增强样式管理灵活性但可能增大文件体积,CSSHoudini允许直接操作CSS渲染。3.WebAssembly优化浏览器应用性能但学习曲线陡,Serverless简化开发但需优化冷启动问题。

HTML的未来充满了无限可能。1)新功能和标准将包括更多的语义化标签和WebComponents的普及。2)网页设计趋势将继续向响应式和无障碍设计发展。3)性能优化将通过响应式图片加载和延迟加载技术提升用户体验。

HTML、CSS和JavaScript在网页开发中的角色分别是:HTML负责内容结构,CSS负责样式,JavaScript负责动态行为。1.HTML通过标签定义网页结构和内容,确保语义化。2.CSS通过选择器和属性控制网页样式,使其美观易读。3.JavaScript通过脚本控制网页行为,实现动态和交互功能。

HTML、CSS和JavaScript是构建现代网页的核心技术:1.HTML定义网页结构,2.CSS负责网页外观,3.JavaScript提供网页动态和交互性,它们共同作用,打造出用户体验良好的网站。

HTMLISNOTAPROGRAMMENGUAGE; ITISAMARKUMARKUPLAGUAGE.1)htmlStructures andFormatSwebContentusingtags.2)itworkswithcsssforstylingandjavascript for Interactivity,增强WebevebDevelopment。

要构建一个功能强大且用户体验良好的网站,仅靠HTML是不够的,还需要以下技术:JavaScript赋予网页动态和交互性,通过操作DOM实现实时变化。CSS负责网页的样式和布局,提升美观度和用户体验。现代框架和库如React、Vue.js和Angular,提高开发效率和代码组织结构。

本文讨论了HTML标签,和和关注其语义与表现用途及其对SEO和可访问性的影响之间的差异。
