Vue Textarea maxlength

<!DOCTYPE html>
<html>
<head>
    <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
</head>
<body>
    <div id="app">
        <h3>Vue Textarea maxlength</h3>
        <textarea v-model="message" maxlength="20"></textarea>
        <p>{{ remainingCharacters }} characters remaining</p>
    </div>
    <script type="module">
        const app = Vue.createApp({
            data() {
                return {
                    message: '',
                    maxLength: 20
                }
            },
            computed: {
                remainingCharacters() {
                    return this.maxLength - this.message.length
                }
            }

});
        app.mount('#app');
    </script>
    <style scoped>
        #app {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

textarea {
            width: 300px;
            height: 100px;
            padding: 10px;
            border-radius: 5px;
            border: 1px solid #ccc;
            font-size: 16px;
            margin-bottom: 10px;
        }

p {
            font-size: 14px;
            color: #999;
        }
    </style>
</body>
</html>