Hi there,
on the first image on the page linked, I added this CSS code that I found here:

.container-overlay {
  position: relative;
  width: 50%;
}

.overlay {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100%;
  width: 100%;
  opacity: 0;
  transition: .5s ease;
  background-color: #008CBA;
}

.container-overlay:hover .overlay {
  opacity: 1;
}

.text-overlay {
  color: white;
  font-size: 20px;
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  text-align: center;
}

on my desktop, it works.
I wonder why does not work on the web -:)
Any ideas or suggestions, thanks in advance.

• This topic was modified 18 hours, 54 minutes ago by FeliceAntonio.

The page I need help with: [log in to see the link]