/* 广告样式 */
#advertise {
  width: 300px;
  height: 400px;
  position: sticky;
  top: 280px;
}
#advertise > div {
  font-size: 1.25em;
  text-align: center;
  font-weight: bolder;
  color: #3c8d40;
  padding: 8px 0;
}

#advertise {
  background-color: white;
}
#advertise > div:first-child {
  background: linear-gradient(to right, #e9f5e9, #f0fff0);
  border-radius: 5px;
}
#advertise > div > a {
  font-size: medium;
  color: lightblue;
  font-weight: lighter;
  font-style: italic;
  text-decoration: underline;
  text-underline-offset: 5px;
}