.#main-nav-grid-thumbnail {
  width: 200;
  height: 200;
}
.#main-nav-mega {
  width: 200;
  height: 200;
}
.#media-image {
  width: 200;
  height: 200;
}

.main-nav-mega__collection-image {
width: 100px; 
height: 100px;
background-size: cover;
}
.collection_image_height {height: 300px;}