annotation styles

.annotation {
  background: #cecbc3 ;
  border-radius: 3px;
  padding: 0px 3px;
  transition: all 0.10s ease-in-out;
  -webkit-transition: all 0.10s ease-in-out;
  -moz-transition: all 0.10s ease-in-out;
  cursor:pointer;
}

.annotation.tweet {
  background: url("http://propublica.s3.amazonaws.com/projects/projectx/tweet_icon.png") no-repeat top left #e8eef1;
  padding-left: 24px;
  background-size: 13px;
  background-position: 5px 2px;
}
.annotation.tweet:hover {
  background: url("http://propublica.s3.amazonaws.com/projects/projectx/tweet_icon_hover.png") no-repeat top left #d7dee1;
  padding-left: 24px;
  background-size: 13px;
  background-position: 5px 2px;
}