<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>外边距和内边距</title>
<style type="text/css">
div{
border: dashed 2px red; /*边框的样式*/
width: 500px; /*宽度*/
/* margin-left: 100px; /!*左外边距*!/
margin-top: 100px; /!*上外边距*!/*/
margin:30px; /*上 右 下 左 顺时针顺序*/
margin:30px 50px; /*上下 30PX 左右 50PX*/ padding: 30px; /*上 右 下 左 顺时针顺序 内边距*/
}
</style>
</head>
<body>
<div><img src="data:image/cat.jpg" height="200"></div>
<div><img src="data:image/cat.jpg" height="200"></div>
</body>
</html>
实现会员登陆的效果 创建一个html页面
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>登录界面</title>
<style type="text/css">
*{ /*整个网页中的所有元素 去掉内边距和外边距*/
padding: 0px;
margin: 0px;
}
div{
width: 300px;
border: solid 1px #3a6587; /*盒子的边框样式*/
margin: auto; /*水平居中*/
}
h2{
padding-left: 20px; /*左内边距*/
line-height: 50px; /*行高*/
height: 50px; /*高度*/
color: white; /*字体颜色*/
background-color:cornflowerblue ; /*背景颜色*/
}
form{
padding: 30px 20px; /*上下边距30px 左右边距20px*/
}
td{
text-align: right; /*文本对齐方式*/
}
</style>
</head>
<body>
<div>
<h2>会员登录</h2>
<form action="" method="post">
<table>
<tr>
<td>姓名:</td>
<td><input type="text"></td>
</tr>
<tr>
<td>邮箱:</td>
<td><input type="text"></td>
</tr>
<tr>
<td>联系电话:</td>
<td><input type="text"></td>
</tr>
<tr>
<td></td>
<td style="text-align: left"><input type="submit" value="登录"></td>
</tr>
</table>
</form>
</div> </body>
</html>
效果图
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>盒子模型</title>
<style type="text/css">
/*
border-style: 边框类型
border-color: 边框颜色
border-width: 边框粗细
设置的时候：都是按照 上右下左的顺序依次赋值！
*/
*{ /*给页面中所有的元素清空内外边距*/
margin: 0px;
padding: 0px;
}
#box{
width: 300px; /*整个盒子的宽度*/
border: 1px solid red; /*盒子的边框*/
margin: 0px auto; /*盒子相对于浏览器 水平居中*/
/*网页中水平居中的必要条件
01.是块元素
02.固定的宽度？？？？ span是根据内容来自动调整宽度！！*/
} div:nth-of-type(1) input{
border: 1px solid red; /*1px红色的实线*/
}
div:nth-of-type(2) input{
border: 1px dashed blue; /*1px蓝色的虚线*/
}
div:nth-of-type(3) input{
border: 1px dotted deeppink; /*1px深粉色的点实线*/
} h2{
height: 35px; /*h2的高度*/
line-height: 35px; /*行高*/
background: #3A6587;
color: #F8F8F3;
padding-left:20px ;
} form{
background: #C8ECE3;
} </style>
</head>
<body>
<div id="box">
<h2>会员登录</h2>
<form action="#" method="post">
<div>
姓名：<input type="text">
</div>
<div>
邮箱：<input type="text">
</div>
<div>
电话：<input type="text">
</div>
</form>
</div> </body>
</html>
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>盒子模型</title>
<style type="text/css">
#box{
width: 120px;
height:120px;
padding: 5px;
margin: 10px;
border: 1px solid red;
box-sizing: border-box;
}
#f{
width: 50px;
height:50px;
border: 1px solid blue;
/*box-sizing: border-box;盒子的高度和宽度就是内容元素的高度和宽度*/
/*box-sizing: content-box;默认值，盒子的总尺寸*/
box-sizing: inherit;/* 继承父类的盒子尺寸类型*/
} </style>
</head>
<body>
<div id="box">
<div id="f"></div>
</div>
</body>
</html>
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>圆角属性</title>
<style type="text/css">
div{
width: 100px;
height: 100px;
border: 1px solid red;
/* border-radius:5px;四个角都是相同的弧度*/
/* border-radius:5px 10px 15px 20px; 左上 --》左下 顺时针顺序*/
border-radius:5px 20px; /*左上和右下 都是5px 右上和左下都是20px*/
}
</style>
</head>
<body>
<div></div></body>
</html>
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>设置半圆</title>
<style type="text/css">
div{
background: orange;
margin: 20px;
}
div:nth-of-type(1){
width: 100px;
height: 50px;
border-radius: 50px 50px 0 0; /*左上和右上*/
} div:nth-of-type(2){
width: 100px;
height: 50px;
border-radius: 0 0 50px 50px;/*左下和右下*/
} div:nth-of-type(3){
width: 50px;
height: 100px;
border-radius: 50px 0 0 50px;/*左上和左下*/
}
div:nth-of-type(4){
width: 50px;
height: 100px;
border-radius: 0 50px 50px 0;/*右上和右下*/
} </style>
</head>
<body>
<div></div>
<div></div>
<div></div>
<div></div>
</body>
</html>
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>设置扇形和圆形</title>
<style type="text/css">
div{
background: orange;
margin: 20px;
}
div:nth-of-type(1){
width: 50px;
height: 50px;
border-radius: 50px 0 0 0; /*左上*/
} div:nth-of-type(2){
width: 50px;
height: 50px;
border-radius: 0 50px 0 0; /*右上*/
} div:nth-of-type(3){
width: 50px;
height: 50px;
border-radius: 0 0 50px 0; /*右下*/
} div:nth-of-type(4){
width: 50px;
height: 50px;
border-radius: 0 0 0 50px; /*左下*/
} div:nth-of-type(4){
width: 50px;
height: 50px;
border-radius:50px; /*设置所有 圆形*/
} </style>
</head>
<body>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
</body>
</html>
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>盒子阴影</title>
<style type="text/css">
div{
height: 100px;
width: 100px;
border: 1px solid red;
border-radius: 10px;
box-shadow:10px 10px 10px orange;/*外阴影*/
/* box-shadow:inset 10px 10px 10px orange;内阴影*/
}
</style>
</head>
<body>
<div></div>
</body>
</html>