body {
  margin: 0;
  font-family: Arial;
  background: #111;
  color: white;
  display: flex;
  height: 100vh;
}

#left {
  width: 30%;
  background: #000;
  padding: 10px;
  overflow-y: auto;
}

#right {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.user {
  padding: 10px;
  background: #222;
  margin: 5px 0;
  cursor: pointer;
}

.user:hover {
  background: #333;
}

#chat {
  flex: 1;
  padding: 10px;
  overflow-y: auto;
}

#inputArea {
  display: flex;
}

#msg {
  flex: 1;
  padding: 10px;
}

button {
  padding: 10px;
}

.msg {
  background: #222;
  margin: 5px;
  padding: 8px;
  border-radius: 5px;
}