.ponencias-container {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-gap: 20px;
    width: 100%;
  }
 
@media (max-width: 767px) {
    .ponencias-container {
        display: grid;
        grid-template-columns: 1fr 1fr;
      }    
}  

  .ponencia {
    display:block;
    position: relative;
  }
  
  .ponencia-thumbnail {
    max-width: 100%;
    border-bottom: solid 1px #404040;
  }
  
  .ponencia-title {
    font-size: 1em;
    margin-bottom: 0.6em;
  }
  
  .post-format {
    position: absolute;
    top: 0;
    right: 0;
    margin: 20px;
    color: #ffffff;
    border: 2px solid #ffffff;
    text-align: center;
    height: 32px;
    width: 32px;
    line-height: 30px;
    border-radius: 50%;
    font-size: 13px;
    background: rgba(0,0,0,0.2);
  }
  
  .ponencia:hover .post-format {
    transform: scale(1.2);
  }
  
  .ponencia-evento {
    text-align: center;
    text-transform: uppercase;
    font-family: Rajdhani, Helvetica Neue, sans-serif;
    font-size: 0.9em;
  }

  .ponencia-evento a {
    color: #808080;
  }