donate: Project paga sticky donate form

donate/templates/donate/donate_project_page.html

@@ -62,6 +62,7 @@
         </div><!-- /column -->
 
         <div class="col-12 col-lg-4 offset-xl-1 order-1 order-lg-2">
+          <div class="sticky-top mb-5">
             <div class="project-donate-form mb-5">
 
               <div class="project-donate-form__left">
@@ -152,6 +153,7 @@
               {#<div class="image"><img data-src="{% static "donate/img/vlajka.jpg" %}" class="img-fluid lazyload" alt="Vlajka pirátů"></div>#}
             </div><!-- /article__sharing-box -->
 
+          </div>
         </div><!-- /column -->
 
       </div> <!-- /row -->

donate/templates/donate/donate_project_page_coalition.html

@@ -64,6 +64,7 @@
         </div><!-- /column -->
 
         <div class="col-12 col-lg-4 offset-xl-1 order-1 order-lg-2">
+          <div class="sticky-top mb-5">
             <div class="project-donate-form mb-5">
 
               <div class="project-donate-form__left">
@@ -125,6 +126,7 @@
               {% endif %}
 
             </div>
+          </div>
         </div><!-- /column -->
 
       </div>