Uniformize style a little bit

templates/security/login.html.twig

@@ -15,10 +15,14 @@
         {% endif %}
 
         <h1 class="h3 mb-3 font-weight-normal">Please sign in</h1>
-        <label for="username">Email</label>
-        <input type="email" value="{{ last_username }}" name="_username" id="username" class="form-control" autocomplete="email" required autofocus>
-        <label for="password">Password</label>
-        <input type="password" name="_password" id="password" class="form-control" autocomplete="current-password" required>
+        <div class="mb-3">
+            <label for="username">Email</label>
+            <input type="email" value="{{ last_username }}" name="_username" id="username" class="form-control" autocomplete="email" required autofocus>
+        </div>
+        <div class="mb-3">
+            <label for="password">Password</label>
+            <input type="password" name="_password" id="password" class="form-control" autocomplete="current-password" required>
+        </div>
 
         <input type="hidden" name="_csrf_token"
                value="{{ csrf_token('authenticate') }}"
@@ -35,8 +39,11 @@
             </div>
         #}
 
-        <button class="btn btn-lg btn-primary" type="submit">
+        <button class="btn btn-primary" type="submit">
             Sign in
         </button>
+        <a class="btn btn-secondary" href="{{ path('app_register') }}">
+            Sign up
+        </a>
     </form>
 {% endblock %}