.honorlist li .img{
  position: relative;
  width: 100%;
  padding-bottom: 100%;
}
.honorlist li .img img{
  display: block;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  display: block;
  max-height: 90%;
  max-width: 90%;
  -o-object-fit: cover;
  object-fit: cover;
}