#instafeed .item {
  position: relative;
  width: 100% !important;
  padding-top: 100% !important; /* força proporção 1:1 (quadrado) */
  overflow: hidden;
}

#instafeed .item img,
#instafeed .item video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100% !important;
  height: 100% !important;
  object-fit: cover !important;   /* corta bordas sem distorcer */
  object-position: center !important;
}