#close {
  float: right;
}

#reference {
  width: 65%;
  background: #fff;
  padding: 20px;
}

#reference .logo {
  width: 90px;
  height: 90px;
  background: #fff;
  float: right;
  margin: 0 20px 10px 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

#reference h1 {
  float: left;
  line-height: 90px;
  font-size: 24px;
}

#reference .description ul li {
    margin: 15px 0;
}