chatbox.css

#chatbox-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
}

#chatbox-opener {
  background-color: #212529;
  border: none;
  color: #fff;
  cursor: pointer;
  font-size: 14px;
  padding: 10px 20px;
}

#chatbox {
  background-color: #fff;
  border: 1px solid #ddd;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
  max-height: 550px;
  overflow: auto;
  position: absolute;
  right: 0;
  bottom: 40px;
  width: 300px;
}

#chatbox #messages {
  padding: 10px;
}

#chatbox form {
  border-top: 1px solid #ddd;
  padding: 10px;
}

#chatbox form input[type="text"] {
  border: 1px solid #ddd;
  padding: 5px;
  width: 50%;
}

#chatbox form button[type="submit"] {
  background-color: #212529;
  border: none;
  color: #fff;
  cursor: pointer;
  font-size: 14px;
  padding: 5px 10px;
}

#chatbox form button[type="submit"]:hover {
  background-color: #343a40;
}