.popup {
  display: none;
  justify-content: center;
  align-items: center;
  background: rgba(0,0,0,.8);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 3;
  width: 100dvw;
  height: 100dvh;
  transition: opacity 500ms;
}

.popup-hide {
  opacity: 0;
}

.popup-show {
  opacity: 1;
}

.popup-img {
  max-width: 740px;
  max-height: 500px;
  margin: 32px;
  position: relative;
}

.popup-img > a > img {
    border-radius: 8px;
}

.popup-close {
  width: 18px;
  opacity: 0.8;
  position: absolute;
  top: -32px;
  right: -2px;
  cursor: pointer;
}

.teste {
  background-color: red;
}