* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: #2a2a2a;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
  padding: 14px;
}

.grid img {
  display: block;
  width: 100%;
  height: auto;
  box-shadow: none;
  filter: none;
}

.grid a,
.room {
  display: block;
  box-shadow: none;
  filter: none;
}