课后作业
1.什么是盒子模型?盒子模型的属性有哪几个?他们的作用分别是什么?
盒子模型就是在网页设计中经常用到的CSS技术所使用的一种思维模型
内容(content)、内边距(padding)、边框(border)、外边距(margin), CSS盒子模式都具备这些属性
盒子模型边框(border)(设置盒子上下左右4条边的边框)
属性:border-width|border-style|border-color
盒子模型的内边距(padding)(设置盒子的里面的上下左右4条的边距)
padding-top:上内边距
padding-right:右内边距
padding-bottom:下内边距
padding-left:左内边距
盒子模型的外边距(margin)(设置盒子的外面的上下左右4条的边距)
margin-top:上外边距
margin-right:右外边距
margin-bottom:下外边距
margin-left:左外边距
2.盒子模型有哪几种解析方式?他们有什么区别?
盒子有两种解析方式:
当我们在样式表输入box-sizing
时,会显示border-box
和content-box
,第一种是边框盒子尺寸,第二种是内容尺寸
当我们给一个元素设置尺寸时,默认设置的是元素内容的尺寸,也就是content-box
,这种在后期布局时会有很多不便
而当我们用border-box
时,我们设置的尺寸实际等于:内容尺寸+两边的内边距+两边的边框宽度
3.制作北大青鸟网站的中心开班信息版块
HTML代码:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>中心开班信息</title>
<link rel="stylesheet" type="text/css" href="css/new_file4.css"/>
</head>
<body>
<div id="nav">
<h1 class="h1">中心开班信息</h1>
<ul>
<li><a href="#">8月12日:学历+技能班</a></li>
<li><a href="#">8月16日:高考特招班</a></li>
<li><a href="#">8月23日:Java精英班</a></li>
<li><a href="#">8月31日:学士后强化班</a></li>
<li><a href="#">9月5日:大学生就业班</a></li>
<li><a href="#">9月9日:企业定向委培班</a></li>
<li><a href="#">9月16日:网络营销强化班</a></li>
</ul>
</div>
</body>
</html>
CSS样式:
h1,
ul,
li {
margin: 0px;
padding: 0px;
}
#nav {
width: 250px;
box-sizing: border-box;
margin: auto;
border: 1px solid gray;
border-radius: 8px;
background: linear-gradient(to bottom, #5EC2F9, #ffffff, #FFFFFF, #ffffff,#ffffff);
}
h1 {
color: white;
font-size: 16px;
border-bottom: 1px solid white;
padding: 8px;
background: url(../img/bg.gif)10px no-repeat;
text-indent: 2.5em;
}
ul {
width: 220px;
}
li {
font-size: 16px;
list-style-type: none;
background: url(../img/dotBg.gif)0px 2px no-repeat;
margin-top: -6px;
padding: 8px 18px;
}
ul li:last-of-type {
margin-bottom: 10px;
}
a {
color: gray;
text-decoration: none;
}
a:hover {
color: orangered;
}
4.制作商品分类列表页面
HTML代码:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>商品分类列表页</title>
<link rel="stylesheet" type="text/css" href="css/new_file5.css"/>
</head>
<body>
<div id="nav">
<ul>
<li><a href="#">酒水、饮料</a></li>
<li><a href="#">进口食品</a></li>
<li><a href="#">休闲零食</a></li>
<li><a href="#">地方特产</a></li>
<li><a href="#">保健、冲调</a></li>
<li><a href="#">粮油、生鲜</a></li>
<li><a href="#">美容洗护</a></li>
<li><a href="#">清洁洗涤</a></li>
<li><a href="#">母婴、纸品</a></li>
<li><a href="#">家居百货</a></li>
</ul>
</div>
</body>
</html>
CSS样式:
#nav {
border: 2px solid orange;
border-radius: 8px;
width: 200px;
padding: 3px;
height: 479px;
}
a {
color: black;
text-decoration: none;
}
a:hover{
color: orangered;
}
li {
list-style-type: none;
font-size: 14px;
font-family: "微软雅黑";
margin-left: -40px;
padding: 0px;
}
ul li:nth-of-type(1) {
margin-top: -18px;
background-image: url(../img/icon_01.jpg);
background-repeat: no-repeat;
line-height: 48px;
text-indent: 3.5em;
border-bottom: 1px dashed;
}
ul li:nth-of-type(2) {
background-image: url(../img/icon_02.jpg);
background-repeat: no-repeat;
line-height: 50px;
text-indent: 3.5em;
border-bottom: 1px dashed;
}
ul li:nth-of-type(3) {
background-image: url(../img/icon_03.jpg);
background-repeat: no-repeat;
line-height: 48px;
text-indent: 3.5em;
border-bottom: 1px dashed;
}
ul li:nth-of-type(4) {
background-image: url(../img/icon_04.jpg);
background-repeat: no-repeat;
line-height: 45px;
text-indent: 3.5em;
border-bottom: 1px dashed;
}
ul li:nth-of-type(5) {
background-image: url(../img/icon_05.jpg);
background-repeat: no-repeat;
line-height: 48px;
text-indent: 3.5em;
border-bottom: 1px dashed;
}
ul li:nth-of-type(6) {
background: url(../img/icon_06.jpg);
background-repeat: no-repeat;
line-height: 47px;
text-indent: 3.5em;
border-bottom: 1px dashed;
}
ul li:nth-of-type(7) {
background-image: url(../img/icon_07.jpg);
background-repeat: no-repeat;
line-height: 47px;
text-indent: 3.5em;
border-bottom: 1px dashed;
}
ul li:nth-of-type(8) {
background-image: url(../img/icon_08.jpg);
background-repeat: no-repeat;
line-height: 48px;
text-indent: 3.5em;
border-bottom: 1px dashed;
}
ul li:nth-of-type(9) {
background-image: url(../img/icon_09.jpg);
background-repeat: no-repeat;
line-height: 48.3px;
text-indent: 3.5em;
border-bottom: 1px dashed;
}
ul li:nth-of-type(10) {
background-image: url(../img/icon_10.jpg);
background-repeat: no-repeat;
line-height: 46px;
text-indent: 3.5em;
}
5.制作权威课程免费体验登录页面
HTML代码:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>免费体验登陆页面</title>
<link rel="stylesheet" type="text/css" href="css/课后作业.css" />
</head>
<body>
<div>
<form action="#" method="post">
<p><span>* </span>姓名<a>:</a> <input type="text" name="text" id="text" /></p>
<p><span>* </span>邮箱<a>:</a> <input type="email" name="email" id="email" /></p>
<p><span>* </span>电话<a>:</a> <input type="text" name="text" id="text" /></p>
<p>
性别<a>:</a>
<select name="id">
<option value="">请选择</option>
<option value="1">男</option>
<option value="2">女</option>
</select>
</p>
<p>
年齡<a>:</a>
<select name="id">
<option value="">请选择</option>
<option value="1">16</option>
<option value="2">17</option>
<option value="3">18</option>
<option value="4">19</option>
<option value="5">20</option>
</select>
</p>
<p><input type="image" src="img/btn.jpg" /></p>
</form>
</div>
</body>
</html>
CSS样式:
body {
background-image: url(../img/bg.jpg);
background-repeat: no-repeat;
}
body div:first-of-type {
color: white;
width: 350px;
box-sizing: border-box;
margin-top: 35px;
text-align: center;
padding: 35px 25px 50px 0px;
font-size: 16px;
}
P span {
margin-left: -45px;
}
span {
color: red;
}
input{
border-radius: 4px;
line-height: 20px;
width: 200px;
}
select {
border-radius: 5px;
}
form p:nth-of-type(4),
form p:nth-of-type(5) {
padding-right: 170px;
}
a {
margin-left: 4px;
margin-right: 4px;
font-weight: 900;
}