diff --git a/__pycache__/app.cpython-310.pyc b/__pycache__/app.cpython-310.pyc
index 833a617..a716764 100644
Binary files a/__pycache__/app.cpython-310.pyc and b/__pycache__/app.cpython-310.pyc differ
diff --git a/app.py b/app.py
index b8f126e..0f205bd 100644
--- a/app.py
+++ b/app.py
@@ -22,7 +22,8 @@ app.config['SECRET KEY'] = 'this should be a secret random string'
 @app.route('/')
 def index():
     conn = get_db_connection()
-    todos = conn.execute('SELECT i.content, l.title FROM items i JOIN lists l \
+    todos = conn.execute('SELECT i.id, i.done, i.content, l.title \
+                          FROM items i JOIN lists l \
                           ON i.list_id = l.id ORDER BY l.title;').fetchall()
 
     lists = {}
@@ -60,4 +61,20 @@ def create():
     conn.close()
     return render_template('create.html', lists=lists)
 
-    
\ No newline at end of file
+
+@app.route('/<int:id>/do/', methods=('POST',))
+def do(id):
+     conn = get_db_connection()
+     conn.execute('UPDATE items SET done = 1 WHERE id = ?', (id,))
+     conn.commit()
+     conn.close()
+     return redirect(url_for('index'))
+
+
+@app.route('/<int:id>/undo/', methods=('POST',))
+def undo(id):
+     conn = get_db_connection()
+     conn.execute('UPDATE items SET done = 0 WHERE id = ?', (id,))
+     conn.commit()
+     conn.close()
+     return redirect(url_for('index'))
\ No newline at end of file
diff --git a/database.db b/database.db
index be3b8c5..70ee5c8 100644
Binary files a/database.db and b/database.db differ
diff --git a/list_example.py b/list_example.py
index 67208ed..cc6bedf 100644
--- a/list_example.py
+++ b/list_example.py
@@ -2,7 +2,8 @@ from itertools import groupby
 from app import get_db_connection
 
 conn = get_db_connection()
-todos = conn.execute('SELECT i.content, l.title FROM items i JOIN lists l \
+todos = conn.execute('SELECT i.id, i.done, i.content, l.title \
+                        FROM items i JOIN lists l \
                         ON i.list_id = l.id ORDER BY l.title;').fetchall()
 
 lists = {}
@@ -13,4 +14,5 @@ for k, g in groupby(todos, key=lambda t: t['title']):
 for list_, items in lists.items():
     print(list_)
     for item in items:
-        print('    ', item['content'])
\ No newline at end of file
+        print('    ', item['content'], '| id:',
+                item['id'], 'done:', item['done'])
\ No newline at end of file
diff --git a/schema.sql b/schema.sql
index 8eed966..40c290e 100644
--- a/schema.sql
+++ b/schema.sql
@@ -12,5 +12,6 @@ CREATE TABLE items (
     list_id INTEGER NOT NULL,
     created TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
     content TEXT NOT NULL,
+    done INTEGER NOT NULL DEFAULT 0,
     FOREIGN KEY (list_id) REFERENCES lists (id)
 );
\ No newline at end of file
diff --git a/templates/index.html b/templates/index.html
index c97680d..f6b5bc4 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -9,7 +9,32 @@
             </div>
             <ul class="list-group list-group-flush">
                 {% for item in items %}
-                    <li class="list-group-item">{{ item['content'] }}</li>
+                    <!-- <li class="list-group-item">{{ item['content'] }}</li> -->
+                    <li class="list-group-item"
+                    {% if item['done'] %}
+                    style="text-decoration: line-through;"
+                    {% endif %}
+                    >{{ item['content'] }}
+                    {% if not item ['done'] %}
+                        {% set URL = 'do' %}
+                        {% set BUTTON = 'Do' %}
+                    {% else %}
+                        {% set URL = 'undo' %}
+                        {% set BUTTON = 'Undo' %}
+                    {% endif %}
+
+
+
+                  <div class="row">
+                        <div class="col-12 col-md-3">
+                            <form action="{{ url_for(URL, id=item['id']) }}"
+                                method="POST">
+                                <input type="submit" value="{{ BUTTON }}"
+                                    class="btn btn-success btn-sm">
+                            </form>
+                        </div>
+                    </div>
+                    </li>
                 {% endfor %}
             </ul>
         </div>