#mosaico {
  position: relative;
  padding: 20px 0;
  width: 100%;  
  margin: 0;
}

#mosaic {
  position: relative;
  visibility: visible;
  width: 100%;
  padding: 10px;
}

.mosaic-item {
  position: relative;
  float: left;
}

@media (max-width: 991px) {
  .mosaic-item {
    width: 31%;  
  }
}

@media (min-width: 992px) {
  .mosaic-item {
    width: 19.6%;  
  }
}

.mosaic-item img {
  display: block;
  width: 100%;
}