#ops {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 100px;
}
#ops a {
  display: block;
}
#ops a img {
  width: 415px;
  height: auto;
  vertical-align: top;
}

@media screen and (max-width: 850px) and (orientation: landscape) {
  #ops {
    width: 95%;
    margin: 0 auto;
    padding-bottom: 50px;
  }
  #ops a {
    width: 48%;
    height: auto;
  }
  #ops a img {
    width: 100%;
    height: auto;
  }
}
@media screen and (max-width: 850px) and (orientation: portrait) {
  #ops {
    width: 100%;
    justify-content: center;
    padding-bottom: 50px;
  }
  #ops a {
    width: 95%;
  }
  #ops a img {
    width: 100%;
    height: auto;
  }
}