html {
  overflow: hidden;
  height: 100%;
}

video {
  width: 700px;
  height: 500px;
}

#chat {
  margin-top: 20px;
}

#chat-messages {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid #ddd;
  padding: 10px;
  margin-bottom: 10px;
}

#chat-input {
  width: calc(100% - 70px);
  padding: 5px;
}

#send-chat {
  padding: 5px 10px;
}