diff --git a/app.py b/app.py
index b0a3506..a33d785 100644
--- a/app.py
+++ b/app.py
@@ -1,4 +1,5 @@
-from flask import Flask, render_template, redirect, url_for, request, abort, g
+from flask import Flask, render_template, redirect, request, g, flash
+import secrets
 import json
 
 from book import Book
@@ -7,12 +8,16 @@ import isbn_db
 app = Flask(__name__)
 
 app.config["DATABASE"] = "data/books.sqlite"
+app.config["SECRET_KEY"] = secrets.token_hex()
 
 @app.route("/submit-isbn")
 def submit_isbn():
     if "isbn" not in request.args:
         return "/submit-isbn?isbn=xxxxxx"
 
+    if request.args["isbn"] == "":
+        return "Pas d'ISBN spécifié"
+
     try:
         book = Book(request.args["isbn"])
     except ValueError:
@@ -29,6 +34,11 @@ def submit_isbn():
         return f"{book.title} ajouté (plusieurs occurrences)"
     return f"{book.title} ajouté"
 
+@app.route("/web-submit-isbn")
+def web_submit_isbn():
+    flash(submit_isbn())
+    return redirect("/")
+
 @app.route("/")
 def index():
     return render_template("index.html", books=isbn_db.get_all_books())
@@ -65,6 +75,21 @@ def update_book():
     isbn_db.update_book(book)
     return redirect("/")
 
+@app.route("/export-csv")
+def export_csv():
+    books = isbn_db.get_all_books()
+
+    csv = "ISBN;Titre;Auteur;Éditeur;Date;Nombre\n"
+    for book in books:
+        csv += f"{book.isbn};{book.title};{book.author};{book.publisher};{book.publish_date};{book.count}\n"
+
+    # return as file with a good filename
+    return app.response_class(
+        csv,
+        mimetype="text/csv",
+        headers={"Content-Disposition": "attachment;filename=books.csv"}
+    )
+
 @app.after_request
 def after_request(response):
     """Automatically close db after each request"""
diff --git a/static/style.css b/static/style.css
index 495ba2e..b1c8cae 100644
--- a/static/style.css
+++ b/static/style.css
@@ -1,4 +1,4 @@
-@import url('/static/font/iosevka.css');
+/*@import url('/static/font/iosevka.css');*/
 
 /** Color Schemes */
 /* Themes used: Catppuccin Latte & Moccha
@@ -32,6 +32,7 @@
     --color-base: #1e1e2e;
     --color-mantle: #181825;
     --color-crust: #11111b;
+    --color-action: #333d5d;
     --font-family: Iosevka Web;
 }
 
@@ -64,6 +65,7 @@
         --color-base: #eff1f5;
         --color-mantle: #e6e9ef;
         --color-crust: #dce0e8;
+        --color-action: #cdd6f4;
     }
 }
 
@@ -183,7 +185,7 @@ input[type=number] {
     padding-bottom: 10px;
 }
 
-button {
+button, input[type="submit"] {
     color: inherit;
     background-color: var(--color-crust);
     border-color: var(--color-crust);
@@ -192,9 +194,15 @@ button {
     border-width: 2px;
     padding: 5px;
     font-family: inherit;
+    width: unset;
 }
 
-button:hover {
+dialog > button, dialog > form > input[type="submit"] {
+    background-color: var(--color-base);
+    border-color: var(--color-base);
+}
+
+button:hover, input[type="submit"]:hover {
     border-color: var(--color-lavender);
 }
 
@@ -247,7 +255,7 @@ table {
     margin: 3px;
     border-radius: 3px;
     box-shadow: 1px 2px 2px rgba(0, 0, 0, 0.2);
-    background-color: #cdd6f4;
+    background-color: var(--color-action);
 }
 
 th {
@@ -263,7 +271,7 @@ table tr:nth-child(even) td{
 
 dialog {
     /* Geometry */
-    border-width: 2px;
+    border-width: 1px;
     border-radius: 3px;
 
     /* Colors */
@@ -271,4 +279,9 @@ dialog {
     color: var(--color-text);
 
     min-width: 75vw;
+}
+
+#add-book {
+    max-width: 300px;
+    margin: auto;
 }
\ No newline at end of file
diff --git a/templates/index.html b/templates/index.html
index 3cd298d..9d7a1ee 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -1,6 +1,6 @@
 {% extends 'base.html' %}
 
-{% block title %}Table{% endblock %}
+{% block title %}Liste des livres{% endblock %}
 
 {% block header %}
 <h1>Table des livres</h1>
@@ -20,7 +20,7 @@
         <input type="text" id="edit-publisher" name="publisher"><br>
         <label for="edit-quantity">Quantité:</label><br>
         <input type="number" id="edit-quantity" name="count"><br>
-        <button type="submit">Mettre à jour</button>
+        <input type="submit" value="Mettre à jour">
     </form>
     <button onclick="hideEditBookDialog()">Annuler</button>
 </dialog>
@@ -29,10 +29,17 @@
     <b id="delete-book-name">Nom du livre...</b>
     <form id="delete-book-form" action="/delete-book" method="post">
         <input type="hidden" id="delete-isbn" value="" name="isbn">
-        <button type="submit">Oui</button>
+        <input type="submit" value="Oui">
     </form>
     <button id="cancel-delete">Annuler</button>
 </dialog>
+<div id="add-book">
+    Ajouter manuellement
+    <form action="web-submit-isbn">
+        <input type="text" name="isbn" placeholder="ISBN">
+        <input type="submit" value="Ajouter">
+    </form>
+</div>
 <table id="books-table">
     <tr>
         <th>ISBN</th>
@@ -50,7 +57,7 @@
         <td><p {% if book.author == None %}class="red"{% endif %}>{{ book.author }}</p></td>
         <td><p {% if book.publish_date == None %}class="red"{% endif %}>{{ book.publish_date }}</p></td>
         <td><p {% if book.publisher == None %}class="red"{% endif %}>{{ book.publisher }}</p></td>
-        <td>{{ book.count }}</td>
+        <td><p {% if book.count != 1 %}class="red"{% endif %}>{{ book.count }}</p></td>
         <td>
             <button class="action" onclick="edit_book({{ book.isbn }})">✏️</button>
             <button class="action" onclick="delete_book({{ book.isbn }})">🗑️</button>
@@ -58,4 +65,6 @@
     </tr>
     {% endfor %}
 </table>
+<br/>
+<a href="/export-csv" download="books.csv">Exporter en CSV</a>
 {% endblock %}