.aImgs{
  display:inline-block;
  position:relative;
  overflow:hidden;
  cursor:pointer;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  text-decoration: none;
}

/* imagen dentro del link */
.aImgs img{
  display:block;
  width:100%;
  height:auto;
  transition: transform .35s ease;
}

/* pseudo-elemento que actúa como 'shutter' */
.aImgs::before{
  content:"";
  position:absolute;
  /* Center the shutter */
  left:50%;
  top:50%;
  /* large enough so rotated rectangle covers the image when scaled */
  width:160%;
  height:160%;
  /* 70% white transparency as requested */
  background: rgba(255,255,255,0.7);
  /* rotate the rectangle 45deg */
  transform: translate(-50%,-50%) rotate(45deg) scaleX(0);
  transform-origin: center center;
  transition: transform .8s cubic-bezier(.2,.9,.3,1), opacity .8s ease;
  z-index:2;
  pointer-events:none;
}

/* hover: expand the shutter horizontally (scaleX -> 1) and fade it out */
.aImgs:hover::before{
  transform: translate(-50%,-50%) rotate(45deg) scaleX(1);
  opacity:0;
	transition: transform .8s cubic-bezier(.2,.9,.3,1), opacity .8s ease;
}
.divOferta2{z-index: 3;}