Javaweb之css
css的三种引入方式
1内行式
2.内嵌式
3.外部样式表
内行式和内嵌式
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
input{
border: 1px solid green;
width: 60px;
height: 40px;
background-color: aquamarine;
color: black;
font-size: 22px;
font-family: '行书';
border-radius: 5px;
}
</style>
</head>
<body>
<!--
-->
<!-- <input type="button" value="按钮"
style=
"border: 1px solid green;
width: 60px;
height: 40px;
background-color: aquamarine;
color: black;
font-size: 22px;
font-family: '行书';
border-radius: 5px;
"
> -->
<input type="button" value="按钮">
<input type="button" value="按钮">
</body>
</html>外部样式表
一个css的文件
input{
border: 1px solid green;
width: 60px;
height: 40px;
background-color: aquamarine;
color: black;
font-size: 22px;
font-family: '行书';
border-radius: 5px;
}代码如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link href="css/btn.css" rel="stylesheet">
</head>
<body>
<input type="button" value="按钮">
<input type="button" value="按钮">
<input type="button" value="按钮">
选择器
1元素选择器
2id选择器
3class选择器
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
#六花{
border: 1px solid green;
width: 60px;
height: 40px;
background-color: aquamarine;
color: black;
font-size: 22px;
font-family: '行书';
border-radius: 5px;
}
</style> -->
<!--
元素选择器
<style>
input{
border: 1px solid green;
width: 60px;
height: 40px;
background-color: aquamarine;
color: black;
font-size: 22px;
font-family: '行书';
border-radius: 5px;
}
</style>
-->
<style>
.shapeClass{
width: 60px;
height: 40px;
}
.colorclass{
background-color: aquamarine;
color: black;
border: 1px solid green;
}
.fontClass{
font-size: 22px;
font-family: '行书';
border-radius: 5px;
}
</style>
</head>
<body>
<input id="六花" class="colorclass shapeClass fontClass" type="button" value="按钮">
<input type="button" value="按钮">
<input id="二奶" type="button" value="按钮">
</body>
</html>浮动
float: 加上方位
如：float: right;
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.outerdiv{
background-color:burlywood ;
height: 500px;
width: 600px;
}
.innerdiv{
height:60px ;
width: 100px;
border: 1px solid black;
}
.d1{
background-color: green;
float: right;
}
.d2{
background-color: red;
float: right;
}
.d3{
background-color: yellow;
float: right;
}
</style>
</head>
<body>
<div class="outerdiv" >
<div class="innerdiv d1">diva</div>
<div class="innerdiv d2">divx</div>
<div class="innerdiv d3">divy</div>
</div>
</body>
</html>定位
position
static 默认（不行动）
absolute 绝对 其他的会填充
relative 相对原来的位置 其他的不会填充
fixed 相对浏览器的窗口 其他的会填充
top
right
left
bottom
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.outerdiv{
background-color:burlywood ;
height: 500px;
width: 600px;
}
.innerdiv{
height:60px ;
width: 100px;
border: 1px solid black;
}
.d1{
background-color: green;
position: static;
top: 60px;
left: 60px;
}
.d2{
background-color: red;
}
.d3{
background-color: yellow;
}
</style>
</head>
<body>
<div class="outerdiv" >
<div class="innerdiv d1">diva</div>
<div class="innerdiv d2">divx</div>
<div class="innerdiv d3">divy</div>
</div>
</body>
</html>盒子模型
内边距 padding
外边距 margin
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.outerdiv{
background-color:burlywood ;
height: 500px;
width: 600px;
margin: 0px auto;
}
.innerdiv{
height:60px ;
width: 100px;
border: 1px solid black;
float: left;
}
.d1{
background-color: green;
margin-right: 10px;
padding-top: 20px;
}
.d2{
background-color: red;
margin-left: 10px;
}
.d3{
background-color: yellow;
}
</style>
</head>
<body>
<div class="outerdiv" >
<div class="innerdiv d1">diva</div>
<div class="innerdiv d2">divx</div>
<div class="innerdiv d3">divy</div>
</div>
</body>
</html>