.img-wrapper {
  position: relative;
  margin-top: 15px;
}
.img-overlay {
  background: rgb(0, 0, 0, 0.7);
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
}
i {
  color: #fff;
  font-size: 1em;
}
#overlay {
  background: rgb(0, 0, 0, 0.7);
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0;
  left: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 999;
  user-select: none;
}
.img-responsive {
  width: 100%;
}
#nextButton {
  color: #fff;
  font-size: 2em;
  transition: opacity 0.8s;
}
#prevButton {
  color: #fff;
  font-size: 2em;
  transition: opacity 0.8s;
}
#exitButton {
  color: #fff;
  font-size: 2em;
  transition: opacity 0.8s;
  position: absolute;
  top: 15px;
  right: 15px;
}
.img-wrapper {
  position: relative;
  margin-top: 15px;
}
.img-overlay {
  background: rgb(0, 0, 0, 0.7);
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
}
#overlay {
  background: rgb(0, 0, 0, 0.7);
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0;
  left: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 999;
  user-select: none;
}
#nextButton {
  color: #fff;
  font-size: 2em;
  transition: opacity 0.8s;
}
#prevButton {
  color: #fff;
  font-size: 2em;
  transition: opacity 0.8s;
}
#exitButton {
  color: #fff;
  font-size: 2em;
  transition: opacity 0.8s;
  position: absolute;
  top: 15px;
  right: 15px;
}

@media screen and (max-width: 480px) {
  .center-gallery-image {
    width: 70%;
  }
}