GenomeDB/mydata/themes/hardwood/build/scss/_announcement.scss

.announcement {
  background-color: darken(theme-color(warning), 10%);
  border-radius: 20px;
  min-height: 40px;
  max-width: 600px;
  //overflow: hidden;
  //white-space: nowrap;
  font-weight: lighter;

  > span {
    margin-right: 10px;
  }

  &,
  &:hover {
    color: lighten(theme-color(warning), 56%);
    text-decoration: none;
  }

  &:hover {
    background-color: darken(theme-color(warning), 20%);
    .announcement-subtext {
      background-color: darken(theme-color(warning), 30%);
    }
  }

  &,
  .announcement-subtext {
    transition: background-color .2s linear;
  }
}

.announcement-subtext {
  padding: 3px 10px;
  border-radius: 20px;
  font-weight: bold;
  background-color: darken(theme-color(warning), 20%);
}