Flex 布局
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head>
<style>
.container {display: flex;
}.left {width: 200px; /* 固定左边宽度 */background-color: lightblue;
}.right {flex: 1; /* 右边占据剩余空间 */background-color: lightpink;
}
</style>
<body><div class="container"><div class="left">左边内容</div><div class="right">右边内容</div></div>
</body>
</html>浮动 + 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>
</head>
<style>.container {overflow: hidden;/* 清除浮动 */}.left {float: left;width: 200px;background-color: lightblue;}.right {margin-left: 200px;/* 与左边元素的宽度相同 */background-color: lightpink;}
</style><body><div class="container"><div class="left">左边内容</div><div class="right">右边内容</div></div>
</body></html>Grid 布局
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head>
<style>
.container {display: grid;grid-template-columns: 200px 1fr;
}.left {background-color: lightblue;
}.right {background-color: lightpink;
}
</style><body><div class="container"><div class="left">左边内容</div><div class="right">右边内容</div></div>
</body></html>.container {
display: grid;
grid-template-columns: 200px 1fr;
}
1fr：表示第二列会占据剩余的所有空间。fr 是一个弹性单位，代表“分数”，它会根据剩余空间的比例来分配宽度。
