h1 {
  font-size: 9vw !important;
  color: red !important;
}

.popup {
  position: fixed;
  z-index: 1;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.7);
  display: none;
}

.popup-content {
  margin-left: 10%;
  margin-top: 25vw;
  width: 80%;
}

.popup-content img {
  width: 80vw;
}

.popup-content img:hover {
  cursor: pointer;
}

.show {
  display: block;
}

@media (min-width: 992px) {
  h1 {
    font-size: 3.5vw !important;
    color: red !important;
  }

  .popup-content {
    margin: 10% auto;
    padding: 20px;
    width: 30%;
  }

  .popup-content img {
    width: 100%;
  }
}
