a {
  color: white;
  text-decoration:none; 
  word-wrap: break-word;
}
.icon {	
  border-radius: 50%;
  width: 48px;
  height: 48px;
}
body {
  font-family: "Noto Sans CJK", "メイリオ", "Meiryo", "游ゴシック Medium", "Yu Gothic Medium", "游ゴシック体", "YuGothic", "ヒラギノ角ゴ ProN W3", "Hiragino Kaku Gothic ProN", "MS Pゴシック", "MS PGothic", sans-serif;
  color: white;
  background-color: black;
}

#index-frame {
  margin: 0 auto;
  text-align: left; 
  max-width: 680px;
}
img {
  max-width: 680px;
  height: auto;
}
span.timestamp {
  font-size: 0.8em;
  color: gray;
  
}
span.tweet {
  font-size: 1em;
  color: black;
  margin:0.2em auto;
}

@media screen and (max-width: 480px) {
  #index-frame {
    margin: 0;
    text-align: left; 
    max-width: 340px;
  }
	img {
    max-width: 340px;
    height: auto;
  }
}

.video {
  position: relative;
  width: 100%;
  padding-top: 56.25%; 
  height: 0;
}

.video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}