Check out the header-top
section of your markup for a normal page, and for the "jumping" page.
Normal:
<div class="logo">
<strong>Magento Commerce</strong>
<a href="http://shop.tvornica-snova.hr/index.php/" title="Magento Commerce" class="logo">
<img src="http://shop.tvornica-snova.hr/skin/frontend/default/f002_yellow/images/logotvornica.png" alt="Magento Commerce">
</a>
</div>
Jumping:
<a href="http://shop.tvornica-snova.hr/index.php/" title="Magento Commerce" class="logo">
<strong>Magento Commerce</strong>
<img src="http://shop.tvornica-snova.hr/skin/frontend/default/f002_yellow/images/logotvornica.png" alt="Magento Commerce">
</a>
The first one contains two references to class="logo"
, which has a defined rule of margin-top: -10px;
. This is the case for any of your pages where the header is the closest to the top of the page - it is being pulled up by 20px
The second one is marked up slightly differently, and contains just one reference to the class - hence the 10px shift you see.
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