模拟二级菜单
HTML部分:
<!DOCTYPE html>
: 声明文档类型为HTML5。<html>
: HTML文档的根元素。<head>
: 包含文档的元数据,如字符集、标题和样式。
<meta charset="utf-8">
: 设置文档的字符编码为UTF-8
。<title>
: 定义文档的标题,显示在浏览器标签页上。<style>
: 包含 CSS 样式,用于定义网页的布局和外观。 <body>
: 包含网页的所有内容。
<div class="menu">
: 一个容器,包含所有的菜单项。
<div class="item">
: 菜单项,每个菜单项都有一个文本标题。
<div class="nav">
: 二级菜单,包含链接和图片。
<a href=""><img src="" alt="" width="40">城市名称</a>
: 超链接,包含图片和文本,点击后可以跳转到指定页面。这里为空,可自行补充。
CSS部分:
body
选择器: 设置整个页面的背景渐变,从天蓝色到白色。a
选择器: 去除超链接的下划线。.menu
类选择器: 设置主菜单的宽度、高度、背景颜色、边距和位置。.menu .item
类选择器: 设置菜单项的高度、颜色、字体大小、行高、内边距和背景图片。.menu .item:hover
伪类选择器: 当鼠标悬停在菜单项上时,改变背景颜色和背景图片。.menu .item .nav
类选择器: 设置二级菜单的宽度、高度、背景颜色、边框、位置、内边距和显示方式(默认为隐藏)。.item .nav a
类选择器: 设置二级菜单中链接的颜色和布局。.item .nav a img
类选择器: 设置图片与文本的间隔。.item .nav a:hover
伪类选择器: 当鼠标悬停在链接上时,改变文本颜色。.item:hover .nav
伪类选择器: 当鼠标悬停在菜单项上时,显示二级菜单。 这个网页布局创建了一个具有二级菜单的主菜单,当用户将鼠标悬停在某个省份的菜单项上时,会显示该省份下的一系列城市链接。
源码
<! DOCTYPE html >
< html>
< head>
< meta charset = " utf-8" >
< title> 模拟二级菜单</ title>
< style type = " text/css" >
body {
margin : 0;
padding : 0;
background-image : linear-gradient ( to right, skyblue, #fff) ;
}
a {
text-decoration : none;
}
.menu {
width : 230px;
height : 420px;
padding : 20px 0;
background-color : rgba ( 0, 0, 0, 0.5) ;
margin : 50px 0 0 50px;
position : relative;
}
.menu .item {
height : 42px;
color : #fff;
font-size : 14px;
line-height : 42px;
padding-left : 30px;
background : url ( 'images/right-jiantou.png' ) no-repeat 200px 10px;
cursor : pointer;
}
.menu .item:hover {
background-color : #ff6700;
background-image : url ( 'images/right-jiantou2.png' ) ;
}
.menu .item .nav {
min-width : 250px;
height : 460px;
background-color : #fff;
border : 1px solid #666;
position : absolute;
top : 0;
left : 100%;
box-sizing : border-box;
display : grid;
grid-template-rows : repeat ( 6, 1fr) ;
grid-template-columns : 250px;
grid-auto-flow : column;
grid-auto-columns : 250px;
padding : 20px;
display : none;
}
.item .nav a {
color : #000;
display : flex;
align-items : center;
}
.item .nav a img {
margin-right : 10px;
}
.item .nav a:hover {
color : #ff6700;
}
.item:hover .nav {
display : grid;
}
</ style>
</ head>
< body>
< div class = " menu" >
< div class = " item" > 安徽
< div class = " nav" >
< a href = " " > < img src = " " alt = " " width = " 40" > 合肥</ a>
< a href = " " > < img src = " " alt = " " width = " 40" > 芜湖</ a>
< a href = " " > < img src = " " alt = " " width = " 40" > 蚌埠</ a>
< a href = " " > < img src = " " alt = " " width = " 40" > 阜阳</ a>
< a href = " " > < img src = " " alt = " " width = " 40" > 滁州</ a>
< a href = " " > < img src = " " alt = " " width = " 40" > 六安</ a>
< a href = " " > < img src = " " alt = " " width = " 40" > 安庆</ a>
< a href = " " > < img src = " " alt = " " width = " 40" > 池州</ a>
< a href = " " > < img src = " " alt = " " width = " 40" > 宿州</ a>
< a href = " " > < img src = " " alt = " " width = " 40" > 淮南</ a>
</ div>
</ div>
< div class = " item" > 江苏
< div class = " nav" >
< a href = " " > < img src = " " alt = " " width = " 40" > 南京</ a>
< a href = " " > < img src = " " alt = " " width = " 40" > 南通</ a>
< a href = " " > < img src = " " alt = " " width = " 40" > 苏州</ a>
< a href = " " > < img src = " " alt = " " width = " 40" > 徐州</ a>
< a href = " " > < img src = " " alt = " " width = " 40" > 常州</ a>
< a href = " " > < img src = " " alt = " " width = " 40" > 无锡</ a>
</ div>
</ div>
< div class = " item" > 浙江
< div class = " nav" >
< a href = " " > < img src = " " alt = " " width = " 40" > 金华</ a>
< a href = " " > < img src = " " alt = " " width = " 40" > 杭州</ a>
< a href = " " > < img src = " " alt = " " width = " 40" > 余杭</ a>
< a href = " " > < img src = " " alt = " " width = " 40" > 萧山</ a>
</ div>
</ div>
< div class = " item" > 河南</ div>
< div class = " item" > 山东</ div>
< div class = " item" > 山西</ div>
</ div>
</ body>
</ html>