#messages {
  height: 600px;
  border-radius: 6px;
  margin-bottom: 2.5rem;
  padding: 12px;
  overflow-y: scroll;
  background-color: #f3f3f3;
}

#messages {
  height: 600px;
  border-radius: 6px;
  margin-bottom: 2.5rem;
  padding: 12px;
  overflow-y: scroll;
  background-color: #f3f3f3;
}

.message:nth-child(even) {
  color: #8c8c8c;
}

Add css for even line of message
Add css for even line of message
