二级下拉菜单 CSS+XHTML代码

最新推荐文章于 2024-11-13 11:44:47 发布

原创最新推荐文章于 2024-11-13 11:44:47 发布 · 1.3k 阅读

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文章标签：

#xhtml #css #list #ie #html #menu

这篇博客提供了实现二级下拉菜单的CSS和XHTML代码示例，包括设置导航宽度、清除默认样式、浮动顶层列表项、定位子级列表等关键步骤。代码适用于多种浏览器，包括对IE的兼容处理，详细展示了如何通过CSS控制菜单的显示和隐藏，以及在不同级别的菜单项上应用背景色和悬停效果。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>二级下拉菜单 CSS+XHTML代码</title> </head> <mce:style type="text/css"></mce:style><style type="text/css" mce_bogus="1"> /* common styling */ /* Set up the default font and ovrall size to include image */ body { background: #fff; font-family: "Lucida Grande", Helvetica, Arial, sans-serif; font-size: 12px; } /* style the outer div to give it width 导航宽度*/ .menu {font-size:12px; padding-bottom:200px; width:900px;} /* remove all the bullets, borders and padding from the default list styling */ .menu ul {padding:0;margin:0;list-style-type:none; height:3em; background:transparent;} /* style the sub-level lists */ .menu ul ul {width:15em;} /* float the top list items to make it horizontal and a relative positon so that you can control the dropdown menu positon */ .menu ul li {float:left;height:3em;line-height:3em; display:block;} /* style the sub level list items */ .menu ul ul li {display:block;width:12em;height:auto; line-height:1em;} /* style the links for the top level */ /* 修改二级下拉菜单宽度在这里-ie7,8and fireFox */ .menu a, .menu a:visited {display:block;float:left;height:100%; width:7em; font-size:1em;text-decoration:none;color:#fff;background:#949e7c url(top_grad.gif) center center; padding:0 3em 0 1em; border-left:1px solid #eee; border-right:1px solid #000;} /* hack IE5.x to get the correct the faulty box model and get the width right */ * html .menu a, * html .menu a:visited {width:11em; w/idth:7em;} /* style the sub level links */ .menu ul ul a, .menu ul ul a:visited {display:block;background:#5b8686 url(sub_grad.gif); color:#fff;width:8em;height:100%;line-height:1em; padding:0.5em 1em; border-bottom:1px solid #7aa;} /* 修改二级下拉菜单宽度在这里-ie6,5 */ * html .menu ul ul a, * html .menu ul ul a:visited {width:10em; w/idth:10em;} /* style the table so that it takes no part in the layout - required for IE to work */ .menu table {border-collapse:collapse; padding:0; margin:-1px; width:0; height:0; font-size:1em; z-index:1;} /* style the third level background */ .menu ul ul ul a, .menu ul ul ul a:visited {background:#b4be9c url(sub_grad.gif);} /* style the fourth level background */ .menu ul ul ul ul a, .menu ul ul ul ul a:visited {background:#c4ceac url(sub_grad.gif);} /* style the sub level 1 background */ .menu ul :hover a.sub1 {background:#447b7b;} /* style the sub level 2 background */ .menu ul ul :hover a.sub2 {background:#447b7b;} /* style the level hovers */ /* first */ * html .menu a:hover {color:#ff0;background:#d4d8bd url(top_grad_2.gif) center center; position:relative; z-index:100;} .menu li:hover {position:relative;} .menu :hover > a {color:#ff0;background:#d4d8bd url(top_grad_2.gif) center center;} /* second */ * html .menu ul ul a:hover{color:#ff0;background:#7aa; position:relative; z-index:110;} .menu ul ul li:hover {position:relative;} .menu ul ul :hover > a {color:#ff0;background:#7aa;} /* third */ * html .menu ul ul ul a:hover {background:#7aa; position:relative; z-index:120;} .menu ul ul ul :hover > a {background:#7aa;} /* fourth */ .menu ul ul ul ul a:hover {background:#7aa; position:relative; z-index:130;} /* hide the sub levels and give them a positon absolute so that they take up no room */ .menu ul ul {visibility:hidden;position:absolute;height:0;top:3em; left:0; width:14em;} /* position the third level flyout menu */ .menu ul ul ul{left:12em;top:0;width:14em;} /* make the second level visible when hover on first level list OR link */ .menu ul :hover ul{visibility:visible; height:auto; padding:0 3em 3em 3em; background:transparent url(images/trans.gif); left:-3em;} /* keep the third level hidden when you hover on first level list OR link */ .menu ul :hover ul ul{visibility:hidden;} /* keep the fourth level hidden when you hover on second level list OR link */ .menu ul :hover ul :hover ul ul{visibility:hidden;} /* make the third level visible when you hover over second level list OR link */ .menu ul :hover ul :hover ul{visibility:visible; left:9em;} /* make the fourth level visible when you hover over third level list OR link */ .menu ul :hover ul :hover ul :hover ul {visibility:visible;}</style> <body> <br /> <br /> <br /> <br /> <br /> <br /> <div class="menu"> <ul> <li><a href="../menu/index.html" mce_href="menu/index.html">二级下拉菜单</a>  <ul> <li><a href="../menu/zero_dollars.html" mce_href="menu/zero_dollars.html" title="The zero dollar ads page">甲甲甲甲甲甲甲</a></li> <li><a href="../menu/embed.html" mce_href="menu/embed.html" title="Wrapping text around images">乙乙乙乙乙乙乙乙</a></li> <li><a href="../menu/form.html" mce_href="menu/form.html" title="Styling forms">丙丙丙丙丙丙丙丙丙</a></li> <li><a href="../menu/nodots.html" mce_href="menu/nodots.html" title="Removing active/focus borders">丁丁丁丁丁丁丁丁丁丁</a></li> <li><a class="sub1" href="../menu/hover_click.html" mce_href="menu/hover_click.html" title="Hover/click with no active/focus borders">hover/click with no borders</a>  <ul> <li><a href="../menu/form.html" mce_href="menu/form.html" title="Styling forms">styled form</a></li> <li><a href="../menu/nodots.html" mce_href="menu/nodots.html" title="Removing active/focus borders">removing active/focus borders</a></li> <li><a class="sub2" href="#nogo" mce_href="#nogo">FLYOUT third level</a>  <ul> <li><a href="#nogo" mce_href="#nogo">Third level-1</a></li> <li><a href="#nogo" mce_href="#nogo">Third level-2</a></li> <li><a href="#nogo" mce_href="#nogo">Third level-3</a></li> <li><a href="#nogo" mce_href="#nogo">Third level-4</a></li> </ul>  </li> <li><a href="../menu/hover_click.html" mce_href="menu/hover_click.html" title="Hover/click with no active/focus borders">hover/click</a></li> </ul>  </li> <li><a href="../menu/shadow_boxing.html" mce_href="menu/shadow_boxing.html" title="Multi-position drop shadow">shadow boxing</a></li> <li><a href="../menu/old_master.html" mce_href="menu/old_master.html" title="Image Map for detailed information">image map for detailed information</a></li> <li><a href="../menu/bodies.html" mce_href="menu/bodies.html" title="fun with background images">fun with background images</a></li> <li><a href="../menu/fade_scroll.html" mce_href="menu/fade_scroll.html" title="fade-out scrolling">fade scrolling</a></li> <li><a href="../menu/em_images.html" mce_href="menu/em_images.html" title="em size images compared">em image sizes compared</a></li> </ul>  </li> <li><a href="../boxes/index.html" mce_href="boxes/index.html">BOXES</a>  <ul> <li><a href="spies.html" mce_href="spies.html" title="a coded list of spies">a coded list of spies</a></li> <li><a href="vertical.html" mce_href="vertical.html" title="a horizontal vertical menu">vertical menu</a></li> <li><a href="expand.html" mce_href="expand.html" title="an enlarging unordered list">enlarging unordered list</a></li> <li><a href="enlarge.html" mce_href="enlarge.html" title="an unordered list with link images">link images</a></li> <li><a href="cross.html" mce_href="cross.html" title="non-rectangular links">non-rectangular</a></li> <li><a href="jigsaw.html" mce_href="jigsaw.html" title="jigsaw links">jigsaw links</a></li> <li><a href="circles.html" mce_href="circles.html" title="circular links">circular links</a></li> </ul>  </li> <li><a href="../mozilla/index.html" mce_href="mozilla/index.html">MOZILLA</a>  <ul> <li><a href="../mozilla/dropdown.html" mce_href="mozilla/dropdown.html" title="A drop down menu">drop down menu</a></li> <li><a href="../mozilla/cascade.html" mce_href="mozilla/cascade.html" title="A cascading menu">cascading menu</a></li> <li><a href="../mozilla/content.html" mce_href="mozilla/content.html" title="Using content:">content:</a></li> <li><a href="../mozilla/moxbox.html" mce_href="mozilla/moxbox.html" title=":hover applied to a div">mozzie box</a></li> <li><a href="../mozilla/rainbow.html" mce_href="mozilla/rainbow.html" title="I can build a rainbow">I can build a rainbow with transparent borders</a></li> <li><a href="../mozilla/snooker.html" mce_href="mozilla/snooker.html" title="Snooker cue">a snooker cue using border art</a></li> <li><a href="../mozilla/target.html" mce_href="mozilla/target.html" title="Target Practise">target practise</a></li> <li><a href="../mozilla/splittext.html" mce_href="mozilla/splittext.html" title="Two tone headings">two tone headings</a></li> <li><a href="../mozilla/shadow_text.html" mce_href="mozilla/shadow_text.html" title="Shadow text">shadow text</a></li> </ul>  </li> <li><a href="../ie/index.html" mce_href="ie/index.html">EXPLORER</a>  <ul> <li><a href="../ie/exampleone.html" mce_href="ie/exampleone.html" title="Example one">the first example for Internet Explorer</a></li> <li><a href="../ie/weft.html" mce_href="ie/weft.html" title="Weft fonts">weft fonts</a></li> <li><a href="../ie/exampletwo.html" mce_href="ie/exampletwo.html" title="Vertical align">vertically aligning text</a></li> </ul>  </li> <li><a href="../opacity/index.html" mce_href="opacity/index.html">OPACITY</a>  <ul> <li><a href="../opacity/colours.html" mce_href="opacity/colours.html" title="colour wheel">a colour wheel using opaque colours</a></li> <li><a href="../opacity/picturemenu.html" mce_href="opacity/picturemenu.html" title="a menu using opacity">a menu using opacity</a></li> <li><a href="../opacity/png.html" mce_href="opacity/png.html" title="partial opacity">partial opacity</a></li> <li><a href="../opacity/png2.html" mce_href="opacity/png2.html" title="partial opacity II">partial opacity II</a></li> <li><a class="sub1" href="../menu/hover_click.html" mce_href="menu/hover_click.html" title="Hover/click with no active/focus borders">HOVER/CLICK</a>  <ul> <li><a href="../menu/form.html" mce_href="menu/form.html" title="Styling forms">styled form</a></li> <li><a href="../menu/nodots.html" mce_href="menu/nodots.html" title="Removing active/focus borders">removing active/focus borders</a></li> <li><a href="../menu/hover_click.html" mce_href="menu/hover_click.html" title="Hover/click with no active/focus borders">hover/click</a></li> </ul>  </li> </ul>  </li> <li><a href="../opacity/index.html" mce_href="opacity/index.html">OPACITY</a>  <ul> <li><a href="../opacity/colours.html" mce_href="opacity/colours.html" title="colour wheel">a colour wheel using opaque colours</a></li> <li><a href="../opacity/picturemenu.html" mce_href="opacity/picturemenu.html" title="a menu using opacity">a menu using opacity</a></li> <li><a href="../opacity/png.html" mce_href="opacity/png.html" title="partial opacity">partial opacity</a></li> <li><a href="../opacity/png2.html" mce_href="opacity/png2.html" title="partial opacity II">partial opacity II</a></li> <li><a class="sub1" href="../menu/hover_click.html" mce_href="menu/hover_click.html" title="Hover/click with no active/focus borders">HOVER/CLICK</a>  <ul> <li><a href="../menu/form.html" mce_href="menu/form.html" title="Styling forms">styled form</a></li> <li><a href="../menu/nodots.html" mce_href="menu/nodots.html" title="Removing active/focus borders">removing active/focus borders</a></li> <li><a href="../menu/hover_click.html" mce_href="menu/hover_click.html" title="Hover/click with no active/focus borders">hover/click</a></li> </ul>  </li> </ul>  </li> </ul> </div> </body> </html>