.square-one {
  width: 30%;
  border-radius: 10px;
  aspect-ratio: 3;
  margin-left: 3%;
  margin-top: 15px;
  text-decoration: none;
}

.square-one div {
  opacity: 0;
  transition: 0.3s;
  width: 100%; 
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 10px;
  font-family: Neuropol;
  color: black;
  font-size: 10px;
}

.square-one:hover {
  text-decoration: none;
}

.square-one:hover div {
  opacity: 1;
  background: rgba(255, 255, 255, 0.9);
}