actually make the ask part a form

app/templates/index.j2

@@ -16,6 +16,7 @@
                 <br>
                 <br>
                 <textarea id="question" name="question" placeholder="question" required></textarea>
+                <button type="submit">send</button>
             </form>
         </div>
     </body>

app/templates/register.j2

@@ -12,7 +12,7 @@
                 Register at {{ instanceLocation }}
             </h1>
             <form method="POST">
-                <input type="text" name="username" placeholder="username" required>
+                <input type="text" name="username" placeholder="username" required><br>
                 <input type="password" name="password" placeholder="password" required>
                 <button type="submit">register</button>
             </form>