.insta_list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 10px 0;
}

.insta_list li {
  position: relative;
  width: calc((100% - 40px) / 3);
}

@media screen and (max-width: 750px) {
  .insta_list li {
    width: calc((100% - 20px) / 2);
  }
}

.insta_list li::before {
  content: "";
  display: block;
  padding-top: 100%;
}

.insta_list a {
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
}

.insta_list img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.insta_btn {
  background: linear-gradient(
    to bottom right,
    #800afc 0%,
    #f102db 40%,
    #fd086f 80%,
    #fe8702 100%
  );
  padding: 0.5em 1em;
  width: fit-content;
  margin: 0 auto;
  cursor: pointer;
  transition: 0.3s;
}

.insta_btn a {
  color: #fff;
  text-decoration: none;
}

.insta_btn:hover {
  background-color: #999;
}