Some questions

1.
You need to edit the file "show_block_product_files" (or "show" before version 1.5.6) of the view "product" via the menu Display->Views. There, you link is displayed by that code:

$fileHtml = '<a class="hikashop_product_file_link" href="' . hikashop_completeLink('product&task=download&file_id=' . $file->file_id.$url_itemid) . '">' . $file->file_name . '</a><br/>';

.hikashop_product_contact_main{
 background-image: url('http://mywebsite.com/myimage.jpg');
}

1. You should make sure that you're editing the view file for your correct front end template. Otherwise, nothing will change.

2. Please make sure that the custom css file is selected in the configuration option and clean your browser cache.

3. With sh404sef, the SEF urls are cached once created. You will have to flush the cache of URLs in sh404sef in order to see the changes.
For the last part of URLs, it's the option "Simplified breadcrumbs" which should be turned on. Also, you will have to do that modification:
www.hikashop.com/en/forum/4-how-to/42061...-products.html#42061

4. Extra fields data is not magically added to the emails. That has to be done manually if you want to do that. It's in the function send_email of the file components/com_hikashop/controllers/product.php that you should add some code to set the field data into the email content.

5.
The position is already solid.
But because you force the container to 250px with some other CSS, it goes outside the container:
.hikashop_products_listing div.hikashop_subcontainer {
height: 250px;
}

If you remove that code, it won't go outside the container.

If you want different sizes for different listings, then you should use parent elements ids in your CSS. For example, the CSS:
#hikashop_category_information_menu_565 .hikashop_products_listing div.hikashop_subcontainer {
height: 290px;
}
will only apply to the products listing on that menu and not on other menus.

7.
It's probably because the original size of the images your uploaded for your categories is smaller than the size that you set in these options. Thus, the system doesn't do any resize. In that case, you should upload bigger images for your categories.

1. The best is to put the full link of your image:

http://mywebsite.com/myfolder/myimage.png

.hikashop_product_contact_main input{
 background-image: url('images/offerte.png');
}

1. can you check that you're edit the correct file ? It's easy, just remove everything from the file, save and if you still see the files on the front end then it means that you're not editing the correct one.
If you're editing the correct one, then it means that there is a problem with the modification. Could you do a screenshot of the code modification you made ?

2. I can indeed see the CSS now applied to the button. However, your template's CSS is overriding it.
To avoid that, pleas use that CSS:

.hikashop_product_contact_main input{
 background-image: url('images/offerte.png') !important;
}

Hi,

1 I don't see any "download files" text on your product pages:
www.heatplus.nl/catalogus/product/6-herz-pelletstar-10-60

2 That's because of your template CSS.
You need additional CSS in order to style the button the way you want:
.hikashop_product_contact_main .art-button-wrapper{
height : 105px !important;
}
.hikashop_product_contact_main input,.hikashop_product_contact_main input:hover {
height: 105px !important;
color: transparent !important;
}


6. You can use such CSS:

#hikashop_product_custom_info_main{
border: 1px solid #CCC;
}

#hikashop_product_custom_info_main td {
border-bottom: 1px solid black !important;
}

#hikashop_product_custom_info_main h4 {
color: black !important;
text-align: center;
}


7. There is no option for that. The image sizes on the comparison table uses the thumbnails size of the Files tab of the configuration of HikaShop.



I would recommend you that you use firebug in order to check your CSS and test it live on your website. That should allow you to modify it without asking how to do each time.

1. Go in the menu Display->Content menus, edit the menu 565 and set the image width and image height options there so that the size is smaller than the boxes.

2. It's working for me: www.heatplus.nl/catalogus/product/26-grondleiding-enkel-h-20-75
Did you figure out the problem ?

3. I can see the text on your categories listing (link of point 1). did you also figured it out ?

4. If you want to add information, you should create custom fields of the table "product" and then configure these fields in your products.
The add to cart button should be added automatically if the add to cart button is turned on for the products listing. If you want to force it only in the compare page, you will have to edit the file "compare" of the view "product" via the menu Display->Views and add the code below at the top:
<?php $this->params->set('add_to_cart',1); ?>

5. There is no option for that.

2. Some products are working ok, some aren't, on the same listing page. The only possible reason is that sh404sef has some of the URLs cached. You should look at flush the cache from sh404sef.

3. In the joomla options of your menu, you should turn on the content page heading and the page title related options (the name varies based on the version of joomla and hikashop)

4. What happened ? I suppose that it's also coming from the SEF... Maybe flushing the cache as in point 1 will help...

5. I can't see the comparison page anymore so hard to say but if you have 3 products columns in the listing, you should be able to have three products columns in the comparison page. At least the problem shouldn't come from the image size.