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头歌-CSS入门(头歌实践教学平台官网)
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CSS从入门到精通-文本与字体样式第1关 字体颜色、类型与大小
body { margin-right: 200px; /* ********** BEGIN ********** */ /*设置背景图片*/ background: url("https://www.educoder.net/attachments/download/211104") no-repeat fixed right top; /* ********** END ********** */ } div { width: 90%; height: 100%; margin: auto; }CSS从入门到精通-基础选择器第1关 CSS 元素选择器<!DOCTYPE html><html lang="zh"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>元素选择器</title> <style type="text/css"> /* ********** BEGIN ********** */ /* 元素选择器 */ html { background-color:#F0F0F0; } header { padding:40px; background-color:white; } footer { margin-top: 20px; font-size:0.6em; color:grey; } /* ********** END ********** */ </style></head><body><div> <header> <li><a href="#chosen">精选</a></li> <li><a href="#news">时事</a></li> <li><a href="#finance">财政</a></li> <li><a href="#think">思想</a></li> <li><a href="#life">生活</a></li> </header> <div> <section> <h2>精选</h2> <li>精选新闻1</li> <li>精选新闻2</li> <li>精选新闻3</li> </section> <section> <h2>时事</h2> <li>时事新闻1</li> <li>时事新闻2</li> <li>时事新闻3</li> </section> <section> <h2>财政</h2> <li>财政新闻1</li> <li>财政新闻2</li> <li>财政新闻3</li> </section> <section> <h2>思想</h2> <li>思想新闻1</li> <li>思想新闻2</li> <li>思想新闻3</li> </section> <section> <h2>生活</h2> <li>生活新闻1</li> <li>生活新闻2</li> <li>生活新闻3</li> </section> </div> <footer>Copyright (c) News Copyright Holder All Rights Reserved.</footer></div></body></html>第2关 CSS 类选择器<!DOCTYPE html><html lang="zh"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>类选择器</title> <style type="text/css"> /* 元素选择器 */ html { background-color: #F0F0F0; } header { padding: 40px; background-color: white; } footer { margin-top: 20px; font-size: 0.6em; color: grey; } /* 类选择器 */ .main { margin: 10px; }/* ********** BEGIN ********** */ .newsSection { margin-top:20px; padding:20px; background-color:white; } /* ********** END ********** */ </style></head><body><div class="main"> <header> <li><a href="#chosen">精选</a></li> <li><a href="#news">时事</a></li> <li><a href="#finance">财政</a></li> <li><a href="#think">思想</a></li> <li><a href="#life">生活</a></li> </header> <!-- ********** BEGIN ********** --> <div class="newsSection"> <!-- ********** END ********** --> <section> <h2>精选</h2> <li>精选新闻1</li> <li>精选新闻2</li> <li>精选新闻3</li> </section> <section> <h2>时事</h2> <li>时事新闻1</li> <li>时事新闻2</li> <li>时事新闻3</li> </section> <section> <h2>财政</h2> <li>财政新闻1</li> <li>财政新闻2</li> <li>财政新闻3</li> </section> <section> <h2>思想</h2> <li>思想新闻1</li> <li>思想新闻2</li> <li>思想新闻3</li> </section> <section> <h2>生活</h2> <li>生活新闻1</li> <li>生活新闻2</li> <li>生活新闻3</li> </section> </div> <footer>Copyright (c) News Copyright Holder All Rights Reserved.</footer></div></body></html>第3关 CSS id选择器<!DOCTYPE html><html lang="zh"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>ID选择器</title> <style type="text/css"> /* 元素选择器 */ html { background-color: #F0F0F0; } header { padding: 40px; background-color: white; } footer { margin-top: 20px; font-size: 0.6em; color: grey; } /* 类选择器 */ .main { margin: 10px; } .newsSection { margin-top: 20px; padding: 20px; background-color: white; } /* ********** BEIGN ********** */ #menu { } #chosen { color:red; } #news { color:blue; } #finance { color:olive; } #think { color:green; } #life { color:orange; } /*选择menu元素下的li子元素*/ #menu li { float: left; width: 70px; font-size: 1.2em; font-weight: lighter; } /*选择menu元素下的li子元素和li下得a子元素*/ #menu li, li a { list-style: none; text-decoration: none; } /* ********** END ********** */ </style></head><body><div class="main"> <!-- ********** BEGIN ********** --> <header id="menu"> <!-- ********** END ********** --> <li><a href="#chosen">精选</a></li> <li><a href="#news">时事</a></li> <li><a href="#finance">财政</a></li> <li><a href="#think">思想</a></li> <li><a href="#life">生活</a></li> </header> <div class="newsSection"> <section> <h2 id="chosen">精选</h2> <li>精选新闻1</li> <li>精选新闻2</li> <li>精选新闻3</li> </section> <section> <h2 id="news">时事</h2> <li>时事新闻1</li> <li>时事新闻2</li> <li>时事新闻3</li> </section> <section> <h2 id="finance">财政</h2> <li>财政新闻1</li> <li>财政新闻2</li> <li>财政新闻3</li> </section> <section> <h2 id="think">思想</h2> <li>思想新闻1</li> <li>思想新闻2</li> <li>思想新闻3</li> </section> <section> <h2 id="life">生活</h2> <li>生活新闻1</li> <li>生活新闻2</li> <li>生活新闻3</li> </section> </div> <footer>Copyright (c) News Copyright Holder All Rights Reserved.</footer></div></body></html>使用HTML/CSS实现Educoder顶部导航栏第1关 使用flex布局实现Educoder顶部导航栏容器布局<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Educoder</title><script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script><script src="step1/verify.js"></script></head><style type="text/css">body {padding: 0;margin: 0;}.color-white {color: white;}/*********** Begin ************/.container {height: 60px;display: flex;justify-content: space-between;}/*********** End ************/</style><body><div class="container"><header style="background: #24292D; min-width:1200px;"><div class="left-wrap color-white">左边容器</div><div class="right-wrap color-white">右边容器</div></header></div></body></html>第2关 实现左侧文字导航列表<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Educoder</title><script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script><script src="step2/verify.js"></script></head><style type="text/css">body {padding: 0;margin: 0;}.container {min-width: 1200px;}.flex {display: flex;}.full-height {height: 100%;}header {background: #24292D;height: 60px;justify-content: space-between;padding: 0 25px;}header>div {height: 100%;display: flex;align-items: center;}/*********** Begin ************/.logo-block {display: flex;align-items: center;justify-content: center;}.logo {width: 40px;height: 38px;margin-right: 30px;}.menu-item {color: #ffffff;font-size: 16px;width: 64px;height: 100%;display: flex;align-items: center;margin-right: 30px;position: relative;}.hot {position: absolute;top: 10px;right: -22px;}/*********** End ************/</style><body><div class="container"><header class="flex"><div class="left-wrap"><!--********** Begin **********--><div class="logo-block"><img src="https://data.educoder.net/images/educoder/headNavLogo.png?1526520218" class="logo"> </div><div class="menu-block full-height flex"><div class="menu-item"><span>实践课程</span></div><div class="menu-item"><span>翻转课堂</span></div><div class="menu-item"><span>实训项目</span></div><div class="menu-item"><span>在线竞赛<img class="hot" src="https://www.yuucn.com/wp-content/uploads/2023/04/1682315694-990685f216439cd.png"></span></div><div class="menu-item"><span>教学案例</span></div><div class="menu-item"><span>交流问答</span></div></div><!--********** End **********--></div><div class="right-wrap"></div></header></div></body></html>第3关 实现右侧功能图标排序<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Educoder</title> <script src="n-item{ height: 100%; width: 48px; display: flex; align-items: center; justify-content: center; } .user{ width: 34px; height: 34px; margin-left: 15px; } /*********** End ************/</style><body><div class="container"> <header class="flex"> <div class="left-wrap"> <div class="logo-block"> <img src="https://www.yuucn.com/wp-content/uploads/2023/04/1682315702-990685f216439cd.png?1526520218" class="logo"> </div> <div class="menu-block full-height flex"> <div class="menu-item"><span>实践课程</span></div> <div class="menu-item"><span>翻转课堂</span></div> <div class="menu-item"><span>实训项目</span></div> <div class="menu-item"><span>在线竞赛<img class="hot" src="data:image/png;base64,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"></span></div> <div class="menu-item"><span>教学案例</span></div> <div class="menu-item"><span>交流问答</span></div> </div> </div> <div class="right-wrap"> <!--********** Begin **********--> <div class="icon-list full-height flex"> <div class="icon-item"><img src="https://data.educoder.net/api/attachments/411643" alt=""></div> <div class="icon-item"><img src="https://data.educoder.net/api/attachments/411644" alt=""></div> <div class="icon-item"><img src="https://data.educoder.net/api/attachments/411645" alt=""></div> </div> <img class="user" src="https://data.educoder.net/images/avatars/User/b?t=1569204859650" alt=""> <!--********** End **********--> </div> </header></div></body></html>第4关 实现左侧鼠标悬停效果与选中状态<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Educoder</title> <script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script> <script src="step4/verify.js"></script></head><style type="text/css"> body { padding: 0; margin: 0; } .container { min-width: 1200px; } .flex { display: flex; } .full-height { height: 100%; } header { background: #24292D; height: 60px; justify-content: space-between; padding: 0 25px; } header > div { height: 100%; display: flex; align-items: center; } .logo-block { display: flex; align-items: center; justify-content: center; } .logo { width: 40px; height: 38px; margin-right: 30px; } .menu-item { color: #ffffff; font-size: 16px; width: 64px; height: 100%; display: flex; align-items: center; margin-right: 30px; position: relative; cursor: pointer; } .hot { position: absolute; top: 10px; right: -22px; } .icon-item { height: 100%; width: 48px; display: flex; align-items: center; cursor: pointer; justify-content: center; } .user { width: 34px; height: 34px; margin-left: 15px; cursor: pointer; } /*********** Begin ************/ .menu-item:hover { opacity:.7; } .active { position:relative; color:#459be5; } .active:after { position:absolute; content: ' '; width: 14px; height: 2px; background: #459be5; bottom: -10px; left: 0; } /*********** End ************/</style><body><div class="container"> <header class="flex"> <div class="left-wrap"> <div class="logo-block"> <img src="https://www.yuucn.com/wp-content/uploads/2023/04/1682315702-990685f216439cd.png?1526520218" class="logo"> </div> <div class="menu-block full-height flex"> <div class="menu-item"><span class="active">实践课程</span></div> <div class="menu-item"><span>翻转课堂</span></div> <div class="menu-item"><span>实训项目</span></div> <div class="menu-item"><span>在线竞赛<img class="hot" src="data:image/png;base64,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"></span> </div> <div class="menu-item"><span>教学案例</span></div> <div class="menu-item"><span>交流问答</span></div> </div> </div> <div class="right-wrap"> <div class="icon-list full-height flex"> <div class="icon-item"><img src="https://www.educoder.net/api/attachments/411643" alt=""></div> <div class="icon-item"><img src="https://www.educoder.net/api/attachments/411644" alt=""></div> <div class="icon-item"><img src="https://www.educoder.net/api/attachments/411645" alt=""></div> </div> <img class="user" src="https://www.educoder.net/images/avatars/User/b?t=1569204859650" alt=""> </div> </header></div></body></html>
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目录
CSS从入门到精通-文本与字体样式
第1关 字体颜色、类型与大小
第2关 字体粗细与风格
第3关 文本装饰与文本布局
CSS从入门到精通-背景样式
第1关 背景颜色
第2关 背景图片
第3关 背景定位与背景关联
CSS从入门到精通-基础选择器
第1关 CSS 元素选择器
第2关 CSS 类选择器
第3关 CSS id选择器
使用HTML/CSS实现Educoder顶部导航栏
第1关 使用flex布局实现Educoder顶部导航栏容器布局
第2关 实现左侧文字导航列表
第3关 实现右侧功能图标排序
第4关 实现左侧鼠标悬停效果与选中状态
CSS从入门到精通-文本与字体样式第1关 字体颜色、类型与大小
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body { /*背景渐变*/ background: -webkit-linear-gradient(left, #7ECABA, #E2FCCB); /* Safari 5.1 - 6.0 */ background: -o-linear-gradient(right, #7ECABA, #E2FCCB); /* Opera 11.1 - 12.0 */ background: -moz-linear-gradient(right, #7ECABA, #E2FCCB); /* Firefox 3.6 - 15 */ background: linear-gradient(to right, #7ECABA, #E2FCCB); /* 标准的语法 */ font: 100% PingFang SC, Verdana, Helvetica Neue, Microsoft Yahei, Hiragino Sans GB, Microsoft Sans Serif, WenQuanYi Micro Hei, sans-serif; /*居中页面*/ width: 45em; margin: 0 auto;}h1,h2 { /* ********** BEGIN ***********/ font-family: PingFang SC, Verdana, Helvetica Neue, Microsoft Yahei, Hiragino Sans GB, Microsoft Sans Serif, WenQuanYi Micro Hei, sans-serif; /* ********** END ***********/}h1 { /* ********** BEGIN ***********/ font-size: 2.1875em; /* ********** END ************/}h2 { background-color: #eaebef; /* ********** BEGIN ***********/ font-size: 1.75em; color: #7d717c; /* ********** END ************/}h3 { background-color: white; /* ********** BEGIN ***********/ font-size: 1.25em; color: green; /* ********** END ************/ padding-left: 10px;}hr { height: 1px; border: none; border-top: 2px dashed #88b2d2;}footer { margin: 10px auto;}/* CONTENT----------------------------------- */.architect { background-color: #fff; padding: 1.5em 1.75em;}/* :::: Intro ::::: */.intro { background-color: #888888; /* ********** BEGIN ***********/ color: #fefefe; /* ********** END ************/ padding: 1px 1.875em .7em;}.intro .subhead { /* ********** BEGIN ***********/ font-size: 1.125em; /* ********** END ************/}.intro p { font-size: 1.0625em;}/* :::: chapter Descriptions ::::: */.chapter p { font-size: .9375em;}img { border-radius: 8px;}/* :::: Links :::: */a:link { color: #e10000;}a:visited { color: #b44f4f;}a:hover { color: #f00;}.intro a { color: #fdb09d;}.intro a:hover { color: #fec4b6;}第2关 字体粗细与风格body { /*背景渐变*/ background: -webkit-linear-gradient(left, #7ECABA, #E2FCCB); /* Safari 5.1 - 6.0 */ background: -o-linear-gradient(right, #7ECABA, #E2FCCB); /* Opera 11.1 - 12.0 */ background: -moz-linear-gradient(right, #7ECABA, #E2FCCB); /* Firefox 3.6 - 15 */ background: linear-gradient(to right, #7ECABA, #E2FCCB); /* 标准的语法 */ font: 100% PingFang SC, Verdana, Helvetica Neue, Microsoft Yahei, Hiragino Sans GB, Microsoft Sans Serif, WenQuanYi Micro Hei, sans-serif; /*居中页面*/ width: 45em; margin: 0 auto;}h1,h2 { /* 设置h1, h2 的font-family*/ font-family: PingFang SC, Verdana, Helvetica Neue, Microsoft Yahei, Hiragino Sans GB, Microsoft Sans Serif, WenQuanYi Micro Hei, sans-serif; /* ********** BEGIN ***********/ font-weight: normal; /* ********** END ***********/}h1 { /* 设置h1元素为 35px 的字体大小 */ font-size: 2.1875em; /* 35px/16px */}h2 { background-color: #eaebef; /* 设置h2元素的字体颜色为：#7d717c */ color: #7d717c; /* 使用em的方式设置h2元素为 28px 的字体大小 */ font-size: 1.75em; /*28px/16px */}h3 { background-color: white; /* 使用em的方式设置h3元素为 20px 的字体大小 */ font-size: 1.25em; /* 设置h3元素的字体颜色为：green */ color: green; padding-left: 10px;}hr { height: 1px; border: none; border-top: 2px dashed #88b2d2;}/* 子选择器 */em,a:link,.intro .subhead { font-weight: bold;}footer { /* ********** BEGIN ***********/ font-weight: light; font-style: italic; /* ********** END ***********/ margin: 10px auto;}footer a { font-style: normal;}/* CONTENT----------------------------------- */.architect { background-color: #fff; padding: 1.5em 1.75em;}/* :::: Intro ::::: */.intro { background-color: #888888; /* 设置 .intro 类元素的字体颜色为 #fefefe */ color: #fefefe; padding: 1px 1.875em .7em;}.intro .subhead { /* 使用em的方式设置 `.intro .subhead ` （intro类下得subhead子类）为 18px 的字体大小。 */ font-size: 1.125em;}.intro p { font-size: 1.0625em;}/* :::: chapter Descriptions ::::: */.chapter p { font-size: .9375em;}img { border-radius: 8px;}/* :::: Links :::: */a:link { /* 设置 a:link 元素的字体颜色为 #b44f4f */ color: #e10000;}a:visited { color: #b44f4f;}a:hover { color: #f00;}.intro a { color: #fdb09d;}.intro a:hover { color: #fec4b6;}第3关 文本装饰与文本布局body { /*背景渐变*/ background: -webkit-linear-gradient(left, #7ECABA, #E2FCCB); /* Safari 5.1 - 6.0 */ background: -o-linear-gradient(right, #7ECABA, #E2FCCB); /* Opera 11.1 - 12.0 */ background: -moz-linear-gradient(right, #7ECABA, #E2FCCB); /* Firefox 3.6 - 15 */ background: linear-gradient(to right, #7ECABA, #E2FCCB); /* 标准的语法 */ font: 100% PingFang SC, Verdana, Helvetica Neue, Microsoft Yahei, Hiragino Sans GB, Microsoft Sans Serif, WenQuanYi Micro Hei, sans-serif; /*居中页面*/ width: 45em; margin: 0 auto;}h1,h2 { font-family: PingFang SC, Verdana, Helvetica Neue, Microsoft Yahei, Hiragino Sans GB, Microsoft Sans Serif, WenQuanYi Micro Hei, sans-serif; font-weight: normal; /*********** BEGIN ***********/ text-align: center; /************ END ************/}h1 { /* 设置h1元素为 35px 的字体大小 */ font-size: 2.1875em; /* 35px/16px */}h2 { background-color: #eaebef; /* 设置h2元素的字体颜色为：#7d717c */ color: #7d717c; /* 使用em的方式设置h2元素为 28px 的字体大小 */ font-size: 1.75em; /*28px/16px */}h3 { background-color: white; /* 使用em的方式设置h3元素为 20px 的字体大小 */ font-size: 1.25em; /* 设置h3元素的字体颜色为：green */ color: green; padding-left: 10px; /*********** BEGIN ***********/ text-align: left; /************ END ************/}p { text-align: justify;}hr { height: 1px; border: none; border-top: 2px dashed #88b2d2;}/* 子选择器 */em,a:link,.intro .subhead { font-weight: bold;}footer { font-weight: light; font-style: italic; /* ********** BEGIN ***********/ text-align: center; /* ********** END ***********/ margin: 10px auto;}footer a { font-style: normal;}/* CONTENT----------------------------------- */.architect { background-color: #fff; padding: 1.5em 1.75em;}/* :::: Intro ::::: */.intro { background-color: #888888; /* 设置 .intro 类元素的字体颜色为 #fefefe */ color: #fefefe; padding: 1px 1.875em .7em;}.intro .subhead { /* 使用em的方式设置 `.intro .subhead ` （intro类下得subhead子类）为 18px 的字体大小。 */ font-size: 1.125em; text-align: center;}.intro p { font-size: 1.0625em;}/* :::: chapter Descriptions ::::: */.chapter p { font-size: .9375em;}.photos { /*********** BEGIN ***********/ text-align: center; /*********** END *************/}img { border-radius: 8px;}/* :::: Links :::: *//* 默认显示样式 */a:link { color: #e10000; /*********** BEGIN ***********/ text-decoration: none; /*********** END *************/}a:visited { color: #b44f4f;}/* 鼠标放在上面的显示样式 */a:hover { color: #f00; /*********** BEGIN ***********/ text-decoration: underline; /*********** END *************/}.intro a { color: #fdb09d;}.intro a:hover { color: #fec4b6;}CSS从入门到精通-背景样式第1关 背景颜色/* ********** BEGIN ********** */body { background-color: ivory;}/* ********** END ********** */h1 { font-size: 40px; text-align: center;}p { font-size: 18px; color: grey; /* ********** BEGIN ********** */ background-color: lightblue; /* ********** END ********** */}第2关 背景图片body { /* ********** BEGIN ********** */ /*设置背景图片*/ background-image:url("https://www.educoder.net/attachments/download/211106") ; /* ********** END ********** */}div { width: 90%; height: 100%; margin: auto;}第3关 背景定位与背景关联 body { margin-right: 200px; /* ********** BEGIN ********** */ /*设置背景图片*/ background: url("https://www.educoder.net/attachments/download/211104") no-repeat fixed right top; /* ********** END ********** */ } div { width: 90%; height: 100%; margin: auto; }CSS从入门到精通-基础选择器第1关 CSS 元素选择器<!DOCTYPE html><html lang="zh"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>元素选择器</title> <style type="text/css"> /* ********** BEGIN ********** */ /* 元素选择器 */ html { background-color:#F0F0F0; } header { padding:40px; background-color:white; } footer { margin-top: 20px; font-size:0.6em; color:grey; } /* ********** END ********** */ </style></head><body><div> <header> <li><a href="#chosen">精选</a></li> <li><a href="#news">时事</a></li> <li><a href="#finance">财政</a></li> <li><a href="#think">思想</a></li> <li><a href="#life">生活</a></li> </header> <div> <section> <h2>精选</h2> <li>精选新闻1</li> <li>精选新闻2</li> <li>精选新闻3</li> </section> <section> <h2>时事</h2> <li>时事新闻1</li> <li>时事新闻2</li> <li>时事新闻3</li> </section> <section> <h2>财政</h2> <li>财政新闻1</li> <li>财政新闻2</li> <li>财政新闻3</li> </section> <section> <h2>思想</h2> <li>思想新闻1</li> <li>思想新闻2</li> <li>思想新闻3</li> </section> <section> <h2>生活</h2> <li>生活新闻1</li> <li>生活新闻2</li> <li>生活新闻3</li> </section> </div> <footer>Copyright (c) News Copyright Holder All Rights Reserved.</footer></div></body></html>第2关 CSS 类选择器<!DOCTYPE html><html lang="zh"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>类选择器</title> <style type="text/css"> /* 元素选择器 */ html { background-color: #F0F0F0; } header { padding: 40px; background-color: white; } footer { margin-top: 20px; font-size: 0.6em; color: grey; } /* 类选择器 */ .main { margin: 10px; }/* ********** BEGIN ********** */ .newsSection { margin-top:20px; padding:20px; background-color:white; } /* ********** END ********** */ </style></head><body><div class="main"> <header> <li><a href="#chosen">精选</a></li> <li><a href="#news">时事</a></li> <li><a href="#finance">财政</a></li> <li><a href="#think">思想</a></li> <li><a href="#life">生活</a></li> </header> <!-- ********** BEGIN ********** --> <div class="newsSection"> <!-- ********** END ********** --> <section> <h2>精选</h2> <li>精选新闻1</li> <li>精选新闻2</li> <li>精选新闻3</li> </section> <section> <h2>时事</h2> <li>时事新闻1</li> <li>时事新闻2</li> <li>时事新闻3</li> </section> <section> <h2>财政</h2> <li>财政新闻1</li> <li>财政新闻2</li> <li>财政新闻3</li> </section> <section> <h2>思想</h2> <li>思想新闻1</li> <li>思想新闻2</li> <li>思想新闻3</li> </section> <section> <h2>生活</h2> <li>生活新闻1</li> <li>生活新闻2</li> <li>生活新闻3</li> </section> </div> <footer>Copyright (c) News Copyright Holder All Rights Reserved.</footer></div></body></html>第3关 CSS id选择器<!DOCTYPE html><html lang="zh"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>ID选择器</title> <style type="text/css"> /* 元素选择器 */ html { background-color: #F0F0F0; } header { padding: 40px; background-color: white; } footer { margin-top: 20px; font-size: 0.6em; color: grey; } /* 类选择器 */ .main { margin: 10px; } .newsSection { margin-top: 20px; padding: 20px; background-color: white; } /* ********** BEIGN ********** */ #menu { } #chosen { color:red; } #news { color:blue; } #finance { color:olive; } #think { color:green; } #life { color:orange; } /*选择menu元素下的li子元素*/ #menu li { float: left; width: 70px; font-size: 1.2em; font-weight: lighter; } /*选择menu元素下的li子元素和li下得a子元素*/ #menu li, li a { list-style: none; text-decoration: none; } /* ********** END ********** */ </style></head><body><div class="main"> <!-- ********** BEGIN ********** --> <header id="menu"> <!-- ********** END ********** --> <li><a href="#chosen">精选</a></li> <li><a href="#news">时事</a></li> <li><a href="#finance">财政</a></li> <li><a href="#think">思想</a></li> <li><a href="#life">生活</a></li> </header> <div class="newsSection"> <section> <h2 id="chosen">精选</h2> <li>精选新闻1</li> <li>精选新闻2</li> <li>精选新闻3</li> </section> <section> <h2 id="news">时事</h2> <li>时事新闻1</li> <li>时事新闻2</li> <li>时事新闻3</li> </section> <section> <h2 id="finance">财政</h2> <li>财政新闻1</li> <li>财政新闻2</li> <li>财政新闻3</li> </section> <section> <h2 id="think">思想</h2> <li>思想新闻1</li> <li>思想新闻2</li> <li>思想新闻3</li> </section> <section> <h2 id="life">生活</h2> <li>生活新闻1</li> <li>生活新闻2</li> <li>生活新闻3</li> </section> </div> <footer>Copyright (c) News Copyright Holder All Rights Reserved.</footer></div></body></html>使用HTML/CSS实现Educoder顶部导航栏第1关 使用flex布局实现Educoder顶部导航栏容器布局<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Educoder</title><script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script><script src="step1/verify.js"></script></head><style type="text/css">body {padding: 0;margin: 0;}.color-white {color: white;}/*********** Begin ************/.container {height: 60px;display: flex;justify-content: space-between;}/*********** End ************/</style><body><div class="container"><header style="background: #24292D; min-width:1200px;"><div class="left-wrap color-white">左边容器</div><div class="right-wrap color-white">右边容器</div></header></div></body></html>第2关 实现左侧文字导航列表<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Educoder</title><script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script><script src="step2/verify.js"></script></head><style type="text/css">body {padding: 0;margin: 0;}.container {min-width: 1200px;}.flex {display: flex;}.full-height {height: 100%;}header {background: #24292D;height: 60px;justify-content: space-between;padding: 0 25px;}header>div {height: 100%;display: flex;align-items: center;}/*********** Begin ************/.logo-block {display: flex;align-items: center;justify-content: center;}.logo {width: 40px;height: 38px;margin-right: 30px;}.menu-item {color: #ffffff;font-size: 16px;width: 64px;height: 100%;display: flex;align-items: center;margin-right: 30px;position: relative;}.hot {position: absolute;top: 10px;right: -22px;}/*********** End ************/</style><body><div class="container"><header class="flex"><div class="left-wrap"><!--********** Begin **********--><div class="logo-block"><img src="https://data.educoder.net/images/educoder/headNavLogo.png?1526520218" class="logo"> </div><div class="menu-block full-height flex"><div class="menu-item"><span>实践课程</span></div><div class="menu-item"><span>翻转课堂</span></div><div class="menu-item"><span>实训项目</span></div><div class="menu-item"><span>在线竞赛<img class="hot" src="https://www.yuucn.com/wp-content/uploads/2023/04/1682315694-990685f216439cd.png"></span></div><div class="menu-item"><span>教学案例</span></div><div class="menu-item"><span>交流问答</span></div></div><!--********** End **********--></div><div class="right-wrap"></div></header></div></body></html>第3关 实现右侧功能图标排序<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Educoder</title> <script src="n-item{ height: 100%; width: 48px; display: flex; align-items: center; justify-content: center; } .user{ width: 34px; height: 34px; margin-left: 15px; } /*********** End ************/</style><body><div class="container"> <header class="flex"> <div class="left-wrap"> <div class="logo-block"> <img src="https://www.yuucn.com/wp-content/uploads/2023/04/1682315702-990685f216439cd.png?1526520218" class="logo"> </div> <div class="menu-block full-height flex"> <div class="menu-item"><span>实践课程</span></div> <div class="menu-item"><span>翻转课堂</span></div> <div class="menu-item"><span>实训项目</span></div> <div class="menu-item"><span>在线竞赛<img class="hot" src="data:image/png;base64,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"></span></div> <div class="menu-item"><span>教学案例</span></div> <div class="menu-item"><span>交流问答</span></div> </div> </div> <div class="right-wrap"> <!--********** Begin **********--> <div class="icon-list full-height flex"> <div class="icon-item"><img src="https://data.educoder.net/api/attachments/411643" alt=""></div> <div class="icon-item"><img src="https://data.educoder.net/api/attachments/411644" alt=""></div> <div class="icon-item"><img src="https://data.educoder.net/api/attachments/411645" alt=""></div> </div> <img class="user" src="https://data.educoder.net/images/avatars/User/b?t=1569204859650" alt=""> <!--********** End **********--> </div> </header></div></body></html>第4关 实现左侧鼠标悬停效果与选中状态<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Educoder</title> <script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script> <script src="step4/verify.js"></script></head><style type="text/css"> body { padding: 0; margin: 0; } .container { min-width: 1200px; } .flex { display: flex; } .full-height { height: 100%; } header { background: #24292D; height: 60px; justify-content: space-between; padding: 0 25px; } header > div { height: 100%; display: flex; align-items: center; } .logo-block { display: flex; align-items: center; justify-content: center; } .logo { width: 40px; height: 38px; margin-right: 30px; } .menu-item { color: #ffffff; font-size: 16px; width: 64px; height: 100%; display: flex; align-items: center; margin-right: 30px; position: relative; cursor: pointer; } .hot { position: absolute; top: 10px; right: -22px; } .icon-item { height: 100%; width: 48px; display: flex; align-items: center; cursor: pointer; justify-content: center; } .user { width: 34px; height: 34px; margin-left: 15px; cursor: pointer; } /*********** Begin ************/ .menu-item:hover { opacity:.7; } .active { position:relative; color:#459be5; } .active:after { position:absolute; content: ' '; width: 14px; height: 2px; background: #459be5; bottom: -10px; left: 0; } /*********** End ************/</style><body><div class="container"> <header class="flex"> <div class="left-wrap"> <div class="logo-block"> <img src="https://www.yuucn.com/wp-content/uploads/2023/04/1682315702-990685f216439cd.png?1526520218" class="logo"> </div> <div class="menu-block full-height flex"> <div class="menu-item"><span class="active">实践课程</span></div> <div class="menu-item"><span>翻转课堂</span></div> <div class="menu-item"><span>实训项目</span></div> <div class="menu-item"><span>在线竞赛<img class="hot" src="data:image/png;base64,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"></span> </div> <div class="menu-item"><span>教学案例</span></div> <div class="menu-item"><span>交流问答</span></div> </div> </div> <div class="right-wrap"> <div class="icon-list full-height flex"> <div class="icon-item"><img src="https://www.educoder.net/api/attachments/411643" alt=""></div> <div class="icon-item"><img src="https://www.educoder.net/api/attachments/411644" alt=""></div> <div class="icon-item"><img src="https://www.educoder.net/api/attachments/411645" alt=""></div> </div> <img class="user" src="https://www.educoder.net/images/avatars/User/b?t=1569204859650" alt=""> </div> </header></div></body></html> 上一篇：Java Web中文乱码,解决方法！！(java中文乱码解决总结)
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