* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.container {
  position: relative;
  min-height: 100vh;
  background: #ddd;
}

.container h1 {
  font-size: 40px;
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  font-weight: normal;
  padding: 15px;
  color: #7e0d0d;
  text-align: center;
  text-transform: capitalize;
}

.image-container {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  justify-content: center;
  padding: 10px;
}

.image {
  height: 250px;
  width: 350px;
  border: 10px solid #fff;
  box-shadow: 0 5px 15px rgba(0, 0, 0, .1);
  overflow: hidden;
  cursor: pointer;
}

.image img {
  height: 100%;
  width: 100%;
  object-fit: cover;
  transition: transform 0.5s ease, filter 0.5s ease;
}

.image:hover img {
  transform: scale(1.1);
  filter: grayscale(100%);
}

.popup-image {
  position: fixed;
  top: 0;
  left: 0;
  background: rgba(0, 0, 0, .9);
  height: 100%;
  width: 100%;
  z-index: 100;
  display: none;
  justify-content: center;
  align-items: center;
}

.popup-image span {
  position: absolute;
  top: 20px;
  right: 30px;
  font-size: 40px;
  font-weight: bold;
  color: #fff;
  cursor: pointer;
}

.popup-image img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border: 5px solid #fff;
  border-radius: 5px;
  width: 90%;
  max-width: 750px;
  object-fit: cover;
}

/* Responsive design */
@media (max-width: 768px) {
  .image {
      width: 100%;
      height: auto;
  }
}

@media (max-width: 480px) {
  .image {
      width: 100%;
      height: auto;
  }

  .popup-image img {
      width: 95%;
  }
}