Open index.html and update the firebase data with your own data

var config = {
        apiKey: "",
        authDomain: "",
        databaseURL: "",
        projectId: "",
        storageBucket: "",
        messagingSenderId: ""
    };

• When user clicks edit, populate the form fields
• Change submit button to update records

• When user click remove
• remove data from database and remove from page

• When user click edit
• show a form at the exact position where record is with button for update and cancel
• if cancel show record again
• if update update record and show new record