body {
  background:#000;
  display:grid;
  place-items:center;
  margin:0;
  height:100vh;
}

.slides {
  height:70vh;
  width:95vh;
  overflow:hidden;
  position:relative;
  border:4px solid #000;
  box-shadow:#000 0px 5px 15px;
}
.slides {
  position: relative;
  width: 95vh;
  height: 70vh;
  overflow: hidden;
}

.slide {
  display: none;
  width: 100%;
  height: 100%;
}




.slide img {
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
}

@keyframes slide-show {
  0%   { opacity:0; }
  10%  { opacity:1; }
  20%,30% { opacity:1; transform:scale(1.03); }
  40%  { opacity:0; }
  100% { opacity:0; }
}
.close-btn {
  position: absolute;
  top: 15px;
  right: 20px;
  font-size: 30px;
  font-weight: bold;
  color: white;
  cursor: pointer;
  background: rgba(0,0,0,0.5);
  padding: 5px 10px;
  border-radius: 5px;
}
.close-btn:hover {
  background: rgba(255,0,0,0.7);
}