Hi Ciarán
My crhome version is the one you refer, the last one. Trying with friends on different computers none were able to replicate the problem, therefore it is visible only in my installation. No Problem. Let's forget the subject. Thanks you for your patience.
Best regards
wallis

Thank you

Admittedly we are unable to replicate this issue (Chrome Version 57.0.2987.133). May I ask what version of Chrome are you using?

Ciarán

Hi Ciarán
Here I send an image from Chrome where you can see the line and from firefox without the line. I don't think that it is an important issue but it is there.
Regards
wallis

Thank you Wallis

We have checked your site (http://www.arroteia.pt/work/) on both Chrome, Edge and FireFox and are unable to notice any difference, Could I ask you to post a screenshot indicating the issue in question.

Ciarán

Hi Ciarán
I believe that the issue is concerning the effect of background fading in the showcase module. By default the container height varies according with the size of the object we insert on it. In my developing of the site I’ve been playing with different object sizes and notice that issue in Chrome and in certain circumstances only. Using Chrome, you may see that issue on http://www.arroteia.pt/work but not on http://www.agrupamento-alfredodasilva-sintra.pt/work.
Regards
wallis

Hi Wallis

Would you have a URL to an example of this issue?

Ciarán