.container-fluid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  max-width: 1440px;
  margin: auto;
  line-height: 1;
}

.box {
  margin: 5px;
  flex-basis: auto;
  flex-grow: 0;
  flex-shrink: 1;
}

img {
  width: 100%;
  touch-action: manipulation;
}

@media (min-width: 510px) {
  .container-fluid {
    padding: 5px;
  }
  .box {
    width: calc(50% - 15px);
  }
}

@media (min-width: 960px) {
  .box {
    width: calc(33.33% - 10px);
  }
}