<!doctype html> <html> <head> <meta charset="utf-8"> <title>网站首页</title> <style> /* ^开头 $结尾 */ img[alt*=m]{ width:200px; padding:5px; /* 对象透明度样式属性 是css3新增加的样式 */ filter:alpha(opacity=50); /* for IE8 and earlier */ opacity:0.5;/* for IE9 and other browsers */ border:1px dashed gray; } img[alt*=m]:hover{ cursor:pointer; filter:alpha(opacity=100); /* for IE8 and earlier */ opacity:1; border:1px dashed red; } h1:hover{color:red;cursor:pointer;} </style> </head> <body> <img src="images/img2.jpg" alt="my pic"> <img src="images/img3.jpg" alt="mypic2m"> <img src="images/img3.jpg" alt="aphhimc2"> <h1>aaaaaaaaaaaa</h1> </body> </html>
<!doctype html> <html> <head> <meta charset="utf-8"> <title>网站首页</title> <style> /* 链接标签的正常效果 */ .nav a:link{ display:block; float:left; color:red; text-decoration:none; font-size:14px; padding:15px; margin:5px; border:1px solid gray; } .nav a:visited {color:black;} .nav a:hover {color:#fff;background-color:red;} .nav a:active {color:yellow;} </style> </head> <body> <div class="nav"> <a href="aa.html">公司简介</a> <a href="aa.html">产品中心</a> <a href="aa.html">联系我们</a> <a href="aa.html">在线客服</a> <a href="http://www.baidu.com/">百度推广</a> </div> <hr style="clear:both;"> <a href="http://www.taobao.com">友情链接</a> </body> </html>
<!doctype html> <html> <head> <meta charset="utf-8"> <title>网站首页</title> <style> /* 控制表格效果 */ .t{ width:80%; text-align:center; margin:0 auto; /*控制表格居中*/ background-color:#c9c9c9; border:0; border-spacing:1px; border-radius:2px; font-size:12px; } .t tr:nth-child(2n){background-color:#fff;} .t tr:nth-child(2n+1){background-color:#f3f3f3;} .t tr:first-child{font-weight:800;line-height:35px;background-color:#e9e9e9;font-size:15px;} .t tr:hover{background-color:#FCE7C4;color:red;} .t tr td{padding:10px;} </style> </head> <body> <table class="t"> <tr><td>学号</td><td>姓名</td><td>成绩</td><td>专业</td><td>出生日期</td><td>操作</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> </table> <br><br><br><hr> <table align="center" class="t"> <tr><td>学号</td><td>姓名</td><td>成绩</td><td>专业</td><td>出生日期</td><td>操作</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> <tr><td>201501</td><td>张三丰</td><td>90</td><td>计算机科学</td><td>1985-12-10</td><td>删除</td></tr> </table> </body> </html>
<!doctype html> <html> <head> <meta charset="utf-8"> <title>网站首页</title> <style> /* ^开头 $结尾 */ img[alt*=m]{ width:200px; padding:5px; /* 对象透明度样式属性 是css3新增加的样式 */ filter:alpha(opacity=50); /* for IE8 and earlier */ opacity:0.5;/* for IE9 and other browsers */ border:1px dashed gray; } img[alt*=m]:hover{ cursor:pointer; filter:alpha(opacity=100); /* for IE8 and earlier */ opacity:1; border:1px dashed red; } h1:hover{color:red;cursor:pointer;} </style> </head> <body> <img src="images/img2.jpg" alt="my pic"> <img src="images/img3.jpg" alt="mypic2m"> <img src="images/img3.jpg" alt="aphhimc2"> <h1>aaaaaaaaaaaa</h1> </body> </html>
<!doctype html> <html> <head> <meta charset="utf-8"> <title>网站首页</title> <style> input:focus{color:red;} input[type=checkbox]:checked + span {color: #f00;} </style> </head> <body> <input type="text" value="1111"><br> <input type="text" value="1111"><br> <input type="text" value="1111"><br> <input type="text" value="1111"><br> <hr> <h3>请选择兴趣爱好</h3> <label><input type="checkbox" name="love[]" value="音乐"><span>音乐</span></label><br> <label><input type="checkbox" name="love[]" value="游戏"><span>游戏</span></label><br> <label><input type="checkbox" name="love[]" value="运动"><span>运动</span></label><br> <label><input type="checkbox" name="love[]" value="看电影"><span>看电影</span></label><br> <label><input type="checkbox" name="love[]" value="计算机网络"><span>计算机网络</span></label><br> </body> </html>
<!doctype html> <html> <head> <meta charset="utf-8"> <title>网站首页</title> <style> p:first-child{color:red;} p:last-child{color:yellow;} p:nth-child(2n){background-color:#0ff;} p:nth-child(2n+1){background-color:#00f;} </style> </head> <body> <div> <p>ppp1</p> <p>ppp2</p> <p>ppp2</p> <p>ppp2</p> <p>ppp2</p> <p>ppp2</p> <p>ppp2</p> <p>ppp2</p> <p>ppp2</p> <p>ppp2</p> <p>ppp3</p> </div> </body> </html>
<!doctype html> <html> <head> <meta charset="utf-8"> <title>网站首页</title> <style> div.face{ width:600px; height:300px; /*border-radius:150px;*/ border-radius:150px; background-image:url(images/img2.jpg); } div{ width:300px; height:300px; margin:20px auto; border:1px solid red; /*border:none; border-bottom:1px dashed gray;*/ border-radius:150px; } .my{ border:none; border-bottom:1px solid gray; background-color:#f9f9f9; padding:5px; } </style> </head> <body> <div class="face"></div> <hr> <div>ddddddddddddddd1</div> <div>ddddddddddddddd1</div> <div>ddddddddddddddd1</div> <div>ddddddddddddddd1</div> <div>ddddddddddddddd1</div> 姓名:<input type="text" class="my" autofocus placeholder="填写姓名"> </body> </html>
<!doctype html> <html> <head> <meta charset="utf-8"> <title>网站首页</title> <style> /* body{ background-image:url(images/img2.jpg); background-size:100% auto; } */ div.face{ width:300px; height:200px; /*background-image:url(images/img2.jpg); */ /* rgba(255,0,0,0.9) 透明颜色,是css3 新增功能 */ /*background-color:rgba(255,0,0,0.9);*/ /*opacity: 控制对象透明的*/ /*background-image: linear-gradient(red,rgba(255,237,0,0.55));*/ /* background-image: linear-gradient(270deg,yellow 5%,red 8%,red 80%,yellow);*/ /*background-image:radial-gradient(red,yellow,green,blue);*/ background-image:url(images/img2.jpg); background-size:300px 200px; } .xl{ width:44px; height:44px; background-image:url(images/xl.png); background-repeat:no-repeat; background-position:-177px -125px; } </style> </head> <body> <div class="xl"></div> <hr> <div class="aa">asdfasdfasf</div> </body> </html>
<!doctype html> <html> <head> <meta charset="utf-8"> <title>网站首页</title> <style> div.myd{ width:480px; height:50px; margin:0 auto; } input.search{ display:block; float:left; border:none; width:376px; height:35px; background-image:url(images/xl.png); padding-left:10px; outline:none; } input.btn{ display:block; float:left; width:69px; height:35px; background-image:url(images/xl.png); background-position:-386px 0; border:none; cursor:pointer; } </style> </head> <body> <form action="search.php" method="post"> <div class="myd"> <input type="text" class="search"> <input type="submit" value="" class="btn"> </div> </form> </body> </html>
<!doctype html> <html> <head> <meta charset="utf-8"> <title>网站首页</title> <style> /* body{ background-image:url(images/img2.jpg); background-size:100% auto; } */ div.face{ width:300px; height:200px; /*background-image:url(images/img2.jpg); */ /* rgba(255,0,0,0.9) 透明颜色,是css3 新增功能 */ /*background-color:rgba(255,0,0,0.9);*/ /*opacity: 控制对象透明的*/ /*background-image: linear-gradient(red,rgba(255,237,0,0.55));*/ /* background-image: linear-gradient(270deg,yellow 5%,red 8%,red 80%,yellow);*/ /*background-image:radial-gradient(red,yellow,green,blue);*/ background-image:url(images/img2.jpg); background-size:300px 200px; } .xl{ width:44px; height:44px; background-image:url(images/xl.png); background-repeat:no-repeat; background-position:-177px -125px; } </style> </head> <body> <div class="xl"></div> <hr> <div class="aa">asdfasdfasf</div> </body> </html>
<!doctype html> <html> <head> <meta charset="utf-8"> <title>无标题文档</title> <style> .t { margin: auto; text-align: center; border: 0px; background-color: #CBCACA; border-spacing: 1px; width: 80%; font-size: 12px; border_raidus: 2px; color: #292828; } .t tr td { padding: 15px; } .t tr:first-child { line-height: 25px; letter-spacing: 3PX; background-color: #E9E9E9; font-weight: 800; font-size: 13px; } .t tr:nth-child(2n) { background-color: #fff; } .t tr:nth-child(2n+1) { background-color: #F3F3F3; } .t tr:hover { background-color: #B5F199; color: RED; } </style> </head> <body> <table class="t"> <tr> <td>网名</td> <td>博客地址</td> <td>邮箱地址</td> <td>qq账号</td> </tr> <tr> <td>runless</td> <td>http://www.cnblogs.com/lsr111</td> <td>1722436324@qq.com</td> <td>1722436324</td> </tr> <tr> <td>runless</td> <td>http://www.cnblogs.com/lsr111</td> <td>1722436324@qq.com</td> <td>1722436324</td> </tr> <tr> <td>runless</td> <td>http://www.cnblogs.com/lsr111</td> <td>1722436324@qq.com</td> <td>1722436324</td> </tr> <tr> <td>runless</td> <td>http://www.cnblogs.com/lsr111</td> <td>1722436324@qq.com</td> <td>1722436324</td> </tr> <tr> <td>runless</td> <td>http://www.cnblogs.com/lsr111</td> <td>1722436324@qq.com</td> <td>1722436324</td> </tr> <tr> <td>runless</td> <td>http://www.cnblogs.com/lsr111</td> <td>1722436324@qq.com</td> <td>1722436324</td> </tr> <tr> <td>runless</td> <td>http://www.cnblogs.com/lsr111</td> <td>1722436324@qq.com</td> <td>1722436324</td> </tr> </table> </body> </html>
选择符写法 /* 包含选择符(E F) */ /* .demo div { border:1px solid #f00; }*/ /* 子选择符(E>F) */ .demo > div { border:1px solid #f00; }
/* 相邻选择符(E+F) */ /*h1+p{color:#f00;}*/ /* 兄弟选择符(E~F) */ h1~p{color:#f00;}
属性选择符 E[att] E = Element 元素 我们叫标签
E[att] CSS2 选择具有att属性的E元素。 E[att="val"] CSS2 选择具有att属性且属性值等于val的E元素。 ~= E[att~="val"] CSS2 选择具有att属性且属性值为一用空格分隔的字词列表,其中一个等于val的E元素。 ^= E[att^="val"] CSS3 选择具有att属性且属性值为以val开头的字符串的E元素。 E[att$="val"] CSS3 选择具有att属性且属性值为以val结尾的字符串的E元素。
E[att*="val"] CSS3 选择具有att属性且属性值为包含val的字符串的E元素。
E[att|="val"] CSS2 选择具有att属性且属性值为以val开头并用连接符"-"分隔的字符串的E元素,如果属性值仅为val,也将被选择。
背景颜色 背景图像 边框