<!DOCTYPE html>
<html lang=
"en">
<head>
<meta charset=
"UTF-8">
<title>Document</title>
<style>
.a1,.a2,.a3{
width: 100px
;
height: 100px
;
}
.a1{
background-color: palegreen
;
}
.a2{
background-color: palevioletred
;
position: relative
;
top: -100px
;
left: 100px
;
}
.a3{
background-color: peru
;
}
.b1,.b2,.b3{
width: 100px
;
height: 100px
;
}
.b1{
background-color: palegreen
;
}
.b2{
background-color: pink
;
position: relative
;
}
.b3{
background-color: peru
;
}.b4{
width: 50px
;
height: 50px
;
background-color: palevioletred
;
position: absolute
;
bottom: 0
;
right: 0
;
}
</style>
</head>
<body>
<!-- 相对定位 position：relative -->
<h2>相对定位</h2>
<div class=
"a1">1</div>
<div class=
"a2">2</div>
<div class=
"a3">3</div>
<br>
<!-- ****************************************************** -->
<!-- 绝对定位 position： -->
<h2>绝对定位</h2>
<div class=
"b1">1</div>
<div class=
"b2">2
<div class=
"b4">4</div>
</div>
<div class=
"b3">3</div>
<br>
<!-- ****************************************************** -->
<!-- 固定定位 -->
<!-- ****************************************************** -->
<!-- 粘滞定位 -->
</body>
</html>
