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}

htmlattributesarecrucialinwebdevelopment forcontrollingBehavior,外观和功能

alt属性是HTML中标签的重要部分,用于提供图片的替代文本。1.当图片无法加载时,alt属性中的文本会显示,提升用户体验。2.屏幕阅读器使用alt属性帮助视障用户理解图片内容。3.搜索引擎索引alt属性中的文本,提高网页的SEO排名。

HTML、CSS和JavaScript在网页开发中的作用分别是:1.HTML用于构建网页结构;2.CSS用于美化网页外观;3.JavaScript用于实现动态交互。通过标签、样式和脚本,这三者共同构筑了现代网页的核心功能。

设置标签的lang属性是优化网页可访问性和SEO的关键步骤。1)在标签中设置lang属性,如。2)在多语言内容中,为不同语言部分设置lang属性,如。3)使用符合ISO639-1标准的语言代码,如"en"、"fr"、"zh"等。正确设置lang属性可以提高网页的可访问性和搜索引擎排名。

htmlattributeseresene forenhancingwebelements'functionalityandAppearance.TheyAdDinformationTodeFineBehavior,外观和互动,使网站互动,响应式,visalalyAppealing.AttributesLikutesLikeSlikEslikesrc,href,href,href,类,类型,类型,和dissabledtransfransformformformformformformformformformformformformformformforment

toCreateAlistinHtml,useforforunordedlistsandfororderedlists:1)forunorderedlists,wrapitemsinanduseforeachItem,RenderingeringAsabulleTedList.2)fororderedlists,useandfornumberedlists,useandfornumberedlists,casundfornumberedlists,customeizableWithTheTtheTthetTheTeTeptTributeFordTributeForderForderForderFerentNumberingSnumberingStyls。

HTML用于构建结构清晰的网站。1)使用标签如、、定义网站结构。2)示例展示了博客和电商网站的结构。3)避免常见错误如标签嵌套不正确。4)优化性能通过减少HTTP请求和使用语义化标签。

toinsertanimageIntoanhtmlpage,usethetagwithsrcandaltattributes.1)usealttextforAcccessibilityandseo.2)instementRcsetForresponSiveImages.3)applylazyloadingWithLoadingWithLoading =“ lazy” tooptimizeperformance.4)tooptimizeperformance.4)


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