1.float
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<style>
.one{
background-color: red;
width: 300px;
height: 200px;
}
.two{
background-color: yellow;
width: 100px;
float: left;
}
.three{
background-color: blue;
width: 100px;
float: right;
}
</style>
</head>
<body>
<div class="one">
<div class="two">1111111111</div>
<div class="three">22222222222</div>
<div>22222222222</div>
<div>22222222222</div>
<div>22222222222</div>
</div>
</body>
</html>
2.position
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<style>
/*子绝父相*/
.one{
background-color: red;
width: 300px;
height: 400px;
margin: 30px;
position: relative;
}
.two{
background-color: yellow;
width: 50px;
position: absolute;
/*top: 20px;*/
/*left: 20px;*/
right: 100px;
top: 100px;
}
</style>
</head>
<body>
<div class="one">
<div class="two">1234</div>
</div>
</body>
</html>
