.post-content {
  align-content: center;
  iframe.video,
  iframe.ted,
  iframe.twitter-tweet,
  img {
    margin: 20px 0;
    border-radius: 3px;
  }
}
img.emoji {
  box-shadow: none;
  margin: 0;
}

.github-cards {
  text-align: center;
}

.post-content {
  text-align: center;
  iframe.video,
  iframe.ted,
  iframe.twitter-tweet,
  img {
    margin: 20px 0;
    border-radius: 3px;
  }
}
img.emoji {
  box-shadow: none;
  margin: 0;
}

.github-cards {
  text-align: center;
}

Test center alignment - 2
Test center alignment - 2
