#main{
    padding:20px;
}
article, .location-image{
    background-color: white;
    height: 300px;
    width:100%;
}

  .grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(450px, 1fr));
    grid-gap: 1em;
  }
  iframe{
      width: 100%;
      height: 300px;
  }
  
  /* hover styles */
  .location-listing {
    position: relative;
  }
  
  .location-image {
    line-height: 0;
    overflow: hidden;
  }