body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
}

.container {
  max-width: 900px;
  margin: 40px auto;
  padding: 0 15px;
}

.header {
  background-color: #557eb5;
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  flex-wrap: nowrap;
}

.header a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}

.header a:hover {
  text-decoration: underline;
}

.message {
  background-color: white;
  margin-top: 20px;
  padding: 15px 20px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  word-wrap: break-word;
}

.message p {
  margin: 0;
  color: #333;
  font-size: 1rem;
}

/* Prevent overlap between items */
.header span {
  flex-shrink: 0;
  white-space: nowrap;
}

.header a.volver {
  flex-shrink: 0;
  white-space: nowrap;
  margin-left: 10px;
}