body {
  font-family: Arial, sans-serif;
  margin: 20px;
  background: #f1f3f4; /* light gray reminiscent of Gmail */
}

.container {
  margin: 0 auto;
  max-width: 1000px;
  background: #fff;
  padding: 20px;
  border-radius: 6px;
  border: 1px solid #ddd;
}

.table {
  border-collapse: collapse;
  width: 100%;
  margin-top: 10px;
}

.table th, .table td {
  border: 1px solid #ddd;
  padding: 8px;
}

.flash-messages {
  margin-bottom: 10px;
}

.flash {
  padding: 8px;
  margin-bottom: 5px;
  border-radius: 4px;
}

.flash-success {
  background-color: #d4edda;
  color: #155724;
}

.flash-danger {
  background-color: #f8d7da;
  color: #721c24;
}

.flash-info {
  background-color: #cce5ff;
  color: #0c5460;
}