.main {
  width: 100%;
  padding-inline: 20px;
  margin-inline: auto;
}

.ul-images-gallery {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.picture {
  flex-grow: 1;
  height: 250px;
  overflow: hidden;
  cursor: zoom-in;
}

.picture img {
  height: 100%;
  width: 100%;
  object-fit: cover;
  vertical-align: middle;
}

.popup {
  animation: fadeIn 0.2s;
  position: fixed;
  background: rgba(0, 0, 0, 0.5);
  height: 100vh;
  left: 0;
  top: 0;
  width: 100vw;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  backdrop-filter: blur(10px);
}

.popup.hidden {
  display: none;
}

.popup__img {
  max-height: 90%;
  max-width: 80%;
}

.popup__close {
  position: fixed;
  border: none;
  background-color: transparent;
  top: 40px;
  right: 60px;
  cursor: pointer;
  width: 40px;
  transition: 0.1s;
}

.popup__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: transparent;
  border: none;
  transition: 0.1s;
  cursor: pointer;
}

#left-image-arrow,
#right-image-arrow {
  width: 64px;
  height: 64px;
}

.popup__arrow--left {
  left: 12%;
}

.popup__arrow--right {
  right: 12%;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.section-headline {
  margin: 30px 0;
}