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

.gallery {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  padding: 0 15px;
}

.gallery-item {
  position: relative;
  width: 250px;
  height: 150px;
  margin: 10px;
  cursor: pointer;
  transition: transform 0.5s ease;
}

.gallery-item:hover {
  transform: scale(1.1);
}

/* The Modal (background) */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease;
}

/* Modal content (image) */
.modal-content {
  position: relative;
  width: 90%;
  height: 90%;
  max-width: 90%;
  max-height: 90%;
  border-radius: 5px;
  overflow: hidden;
  animation: zoomIn 0.5s;
}

@keyframes zoomIn {
  from {transform: scale(0.6);}
  to {transform: scale(1);}
}

.modal.show {
  display: flex;
  opacity: 1;
}

/* Close button */
.close {
  position: absolute;
  top: 10px;
  right: 15px;
  color: #ffffff;
  font-size: 35px;
  font-weight: bold;
  cursor: pointer;
  transition: transform 0.3s;
}

/* Caption of modal image */
.caption {
/*  position: absolute;
  bottom: 15px;
  width: 100%;
  text-align: center;
  color: #ffffff;
  font-size: 24px;
*/
}

@media screen and (max-width: 768px) {
  .gallery-item {
    width: calc(50% - 20px);
  }
}

@media screen and (max-width: 480px) {
  .gallery-item {
    width: calc(100% - 20px);
  }
}