body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
}

main {
  width: 900px;
  margin: 20px 0 0 20px;
  padding: 0 0 0 30px;
  border-left: #bbbbbb 4px solid;
}

main.loggedin {
  height: 50vh;
  border-left: orangered 4px solid;
}

h2 {
  color: #333;
}

h3, h4 {
  color: #333;
  margin-top: 0;
}

button.action {
  background-color: #ef5800;
  color: #fff;
  font-size: 16px;
  padding: 10px 20px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button.action:hover {
  background-color: #874800;
}

button.disabled {
  background-color: #bbbbbb;
  color: #000;
  font-size: 16px;
  padding: 10px 20px;
  border: none;
  border-radius: 10px;
  cursor: not-allowed;
}

.hidden {
  display: none;
}