button {
  margin: 4px;
}

.content {
  display: flex;
  justify-content: center;
}

.user {
  padding: 20px;
}

.message {
  padding: 2px 4px;
  margin: 0px;
}

.message-box-message {
  width: 150px;
}

.message-box-received {
  height: 200px;
  width: 200px;
  overflow-y: auto;
  border: solid 1px;
  margin-top: 10px;
}

.message-box-received.disabled {
  border-color: lightgray;
}