How do I find page ID's and create If statements in Magento?

So an 80% complete website has been dropped on me which is using Magento and I have no experience or knowledge in Magento, I'm also a Junior Developer so please bare with.

I am looking to target the a product category page to create an if statement to add some inline css.

I am having no problem targeting pages created in the pages section of within the admin panel but cannot find the ID's for any product related pages.

I have found IDs for entire categories but not specific product based pages.

So far this has helped me to target cms based pages:

http://ift.tt/1RPnxzd

I have also attempted the follwing which taregts the entire cateogry and its products as apposed to just targeting the overall product category page..

<?php $category = Mage::getModel('catalog/layer')->getCurrentCategory();?>
<?php if($category->getId()==24): ?>

<style>
@media only screen  and (min-width : 1824px) {footer.footer { position: absolute;}}
</style> 

<?php endif; ?>

any help would be or pointing in the right direction would be a huge help,

thanks