怎样让文本框前的文字显示在左上角

img

把源码贴出来

<label for="msg" style="vertical-align: top;">留言</label>


<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .label{
            vertical-align: top;
        }
    </style>
</head>

<body>
    <div>
        <span class="label">留言：</span>
        <textarea rows="3" cols="20">

        </textarea>
    </div>
</body>
<script>

</script>

</html>

vertical-align:top

外层的div设置为flex布局