body {
  margin: 0;
}

* {
  box-sizing: border-box;
}
.container {
  background-color: azure;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

li {
  margin: 0;
  padding: 0;
  margin: 0 auto;
}

img {
  display: block;
  width: 100%;
  height: auto;
  margin: 0;
}

@media screen and (min-width: 768px) {
  li {
    max-width: 768px;
  }
}

@media screen and (min-width: 1056px) {
  .container {
    margin: 0 auto;
    padding: 0 15px;
  }

  ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 0;
  }

  li {
    width: calc(100% / 3);
    max-width: none;
  }
}