body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  text-align: center;
  padding: 20px;
  background-color: #f5f5f5;
}

.menu {
  border-radius: 10px;
  background-color: #fff;
  padding: 20px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  transition: opacity 0.3s ease-in-out;
}

.menu.hidden {
  opacity: 0;
}

h1 {
  font-size: 32px;
  margin-bottom: 30px;
}

#selectionbox {
  margin-bottom: 30px;
}

#contentbox, #callbox {
  margin-top: 30px;
}

#callbox {
  background-color: #fff;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.video-container {
  position: relative;
  display: inline-block;
  width: 49%;
  max-width: 400px;
  border: 2px solid #ddd;
  border-radius: 10px;
  overflow: hidden;
  margin: 5px;
}

.video-container video {
  width: 100%;
  border-radius: 10px;
}

.video-overlay {
  position: absolute;
  bottom: 10px;
  right: 10px;
}

.action-button {
  background-color: #007bff;
  color: #fff;
  border: none;
  border-radius: 5px;
  padding: 10px 20px;
  font-size: 18px;
  margin: 0 10px;
  cursor: pointer;
  transition: background-color 0.3s ease-in-out;
}

.action-button:hover {
  background-color: #0056b3;
}

#flipCameraButton {
  background-color: #007bff;
  color: #fff;
  border: none;
  border-radius: 5px;
  padding: 10px 20px;
  font-size: 18px;
  margin-top: 20px;
  cursor: pointer;
  transition: background-color 0.3s ease-in-out;
}

#flipCameraButton:hover {
  background-color: #0056b3;
}

#callinfo {
  margin-top: 20px;
}

#callinfo h5 {
  font-size: 16px;
  margin-bottom: 10px;
}

#callIdDisplay {
  font-size: 18px;
  margin-bottom: 20px;
}

.hidden {
  display: none;
}