body {
  font-family: sans-serif;
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1rem;
  color: #222;
}
header {
  margin-bottom: 1.5rem;
  border-bottom: 1px solid #ddd;
  padding-bottom: 0.5rem;
}
header h1 {
  font-size: 1.3rem;
  display: inline-block;
}
header h1 a {
  text-decoration: none;
  color: inherit;
}
table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0;
}
th, td {
  border: 1px solid #ccc;
  padding: 0.4rem 0.6rem;
  text-align: left;
}
.fehler {
  color: #b00020;
  font-weight: bold;
}
.erfolg {
  color: #1b7a1b;
  font-weight: bold;
}
.hinweis {
  color: #555;
  font-style: italic;
}
form label {
  display: inline-block;
  margin: 0.3rem 0.6rem 0.3rem 0;
}
button {
  cursor: pointer;
  padding: 0.4rem 1rem;
  margin-top: 0.5rem;
}