自定义提示信息框

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

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .tk_suss {
            border: 1px solid #c3e6cb;
            display: none;
        }

        .tk_sb {
            border: 1px solid #fc5531;
            display: none;
        }

        .tk_error {
            padding: 0 20px;
            height: 40px;
            color: #2b2b2c;
            font-size: 18px;
            line-height: 40px;
            text-align: center;
            border-radius: 5px;
            position: fixed;
            top: 40%;
            left: 50%;
            background-color: rgba(0, 0, 0, 0.5);
            color: #fff;
        }
    </style>
</head>

<body>
    <div class="tk tk_suss">
        提交成功
    </div>
    <div class="tk tk_sb">
        提交失败
    </div>
    <div class="tk_error">Code Error</div>
</body>


<script>
    let failNode1 = $(`<div class="tk_error" id="tk_error">Code Error</div>`)
    $('body').append(failNode1)
    setTimeout(function () {
        $('#tk_error').remove();
    }, 2000)


</script>

</html>