<!-- 方法一 使用table-cell等高 -->
<!-- <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
.left,
.right {
width: 200px;
padding: 10px;
display: table-cell;
}
.left {
background-color: red;
}
.right {
background-color: blue;
}
</style>
</head>
<body>
<div class="wrap">
<div class="left">
left
<br/>
<br/>
<br/>
<br/>
<br/>
</div>
<div class="right">
right
</div>
</div>
</body>
</html> -->
<!-- 方法二 使用display:flex -->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
.wrap {
display: flex;
}
.left,.right {
width: 200px;
padding: 10px;
}
.left {
background-color: red;
}
.right {
background-color: blue;
}
</style>
</head>
<body>
<div class="wrap">
<div class="left">
left
<br/>
<br/>
<br/>
<br/>
<br/>
</div>
<div class="right">
right
</div>
</div>
</body>
</html>
效果展示： 