body {
  font-family: Arial, sans-serif;
  margin: 2rem;
  background-color: #f5f5f5;
}
h1, h2, h3 {
  color: #333;
}
form label {
  display: block;
  margin-bottom: 0.5rem;
}
input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="time"] {
  padding: 0.4rem;
  margin-top: 0.2rem;
  margin-bottom: 0.8rem;
  width: 100%;
  max-width: 300px;
}
button {
  padding: 0.5rem 1rem;
  background-color: #007acc;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}
button:hover {
  background-color: #005ea8;
}
.message {
  margin: 1rem 0;
  padding: 0.5rem;
  border-radius: 4px;
}
.message.success {
  background-color: #d1e7dd;
  color: #0f5132;
}
.message.error {
  background-color: #f8d7da;
  color: #842029;
}
.shift {
  background: #fff;
  padding: 0.5rem;
  margin-bottom: 0.5rem;
  border-radius: 4px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
select {
  padding: 0.4rem;
  margin: 0.5rem 0;
}