body {
    margin: 0;
    font-family: Arial;
  }

.post-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr); 
    justify-content: center;
    grid-gap: 15px;
    margin-top: 15px;
    margin-bottom: 15px;
    margin-left: 15px;
    margin-right: 15px;
  }
  
  .post-image {
    margin: 0;
    padding-top: 100%; 
    position: relative;
  }
  
  .post-image img {
    width: 100%;
    height: 100%; 
    object-fit: cover; 
    position: absolute;
    top: 0;
    left: 0;
  }
  .post-overlay {
    background: rgba(0,0,0, .4);
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    top: 0;
    display: none;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
  }
  .post:hover .post-overlay{
              display: flex;
  }
  
  .post-name {
    width: 80px;
    margin: 5px;
    font-weight: bold;
    text-align: center;
    display: inline-block
  }
  
  @media screen and (max-width: 768px) {
    .post-list {
      grid-gap: 3px;
    }
  }