.photo-gal{
  margin:auto;
  text-align: center;
}

.gallery__list {
  list-style-type: none;
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  max-width: 2000px;
  margin: auto;
  padding: 30px 0;
  margin-bottom: 100px;
}
.gallery__item {
  max-width: 350px;
  margin: auto;
  padding: 10px;
}
.gallery__item:not(:nth-child(-n+2)) {

  padding: 10px;
}
.gallery__item img {
  width: 60%;
  height: auto;
}
.gallery__item a {
  transition: .5s;
}
.gallery__item a:hover {
  filter: opacity(0.7);
}
.gallery__item a:hover img {
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.15);
}






@media screen and (max-width:800px){
  /* ----------------------------- */
  /* header_sp
  /* ----------------------------- */

  .gallery__item {
    max-width: 300px;
    margin: auto;
    padding: 10px;
  }
}