1 float margin-left
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>左列定寬，右列自適應-1</title>
<style>
.left {
float: left;
width: 100px;
background-color: green;
}
.right {
margin-left: 100px;
background-color: red;
}
</style>
</head>
<body>
<div>
<div class="left">左列定寬</div>
<div class="right">右列自適應</div>
</div>
</body>
</html>
2 float overflow: hidden;
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>左列定寬，右列自適應-2</title>
<style>
.left {
float: left;
width: 100px;
background-color: green;
}
.right {
overflow: hidden;
background-color: red;
}
</style>
</head>
<body>
<div>
<div class="left">左列定寬</div>
<div class="right">右列自適應</div>
</div>
</body>
</html>
3 table
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>左列定寬，右列自適應-2</title>
<style>
.parent {
display: table;
table-layout: fixed;
width: 100%;
}
.left {
display: table-cell;
width: 100px;
background-color: green;
}
.right {
display: table-cell;
background-color: red;
}
</style>
</head>
<body>
<div class="parent">
<div class="left">左列定寬</div>
<div class="right">右列自適應</div>
</div>
</body>
</html>
4 flex
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>左列定寬，右列自適應-4</title>
<style>
.parent {
display: flex;
}
.left {
width: 100px;
background-color: green;
}
.right {
flex: 1;
background-color: red;
}
</style>
</head>
<body>
<div class="parent">
<div class="left">左列定寬</div>
<div class="right">右列自適應</div>
</div>
</body>
</html>
