.img_wrap{
  border: 1px solid #ddd;

  margin: 0 auto;
  overflow: hidden;
}
.img_wrap img{
  width: 100%;
  cursor: pointer;
  transition-duration: 0.3s;
}
.img_wrap:hover img{
  opacity: 0.6;
  transition-duration: 0.3s;
}

figure.gazo-box {
float: left;
padding-right: 20px;
}