.rnmediablock-row{
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}

.rnmediablock-column{
    -ms-flex: 100%;
    flex: 100%;
    max-width: 100%;
}

.rnmediablock-column img {
    max-height: 40px;
    max-width: 100%;
    margin-top: 0;
    vertical-align: middle;
}

@media (min-width: 768px) {
  .rnmediablock-column img {
    margin-top: 8px;
  }

  .rnmediablock-column img:first-child {
    margin-top: 0;
  }
}