body {

 background: #dcdecf;
 color: #333;
 margin: 0; padding: 0;
 font: 11pt/1.5 'lucida grande', verdana, sans-serif;
 text-align: center; /* Zentriert den Inhalt für ältere Browser */
}

h1 {
  color: black;
  font-family: 'lucida grande', verdana, sans-serif;
  font-size: 15;
}
h1 {
  color: black;
  font-family: 'lucida grande', verdana, sans-serif;
  font-size: 14;
}
p {
  color: black;
  font-family: 'lucida grande', verdana, sans-serif;
  font-size: 12;
}

main {
  border: var(--strokewidth) solid var(--color);
  grid-template-columns: repeat(auto-fit, minmax(min(500px, 100%), 1fr));
  grid-template-rows: 1fr 1fr 1fr 1fr;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}
.card {
  --color:#257989;
  --strokewidth: 2px;
  color: var(--color);
  border: var(--strokewidth) solid;
  margin: 1em;
  width: 800px;

}

.card-header {
  aspect-ratio: 20/9;
  background: var(--color);
}

.card-content {
  padding: 1em;
}

.card-btn {
  padding: .8em 1.2em;
  color: var(--color);
  border: var(--strokewidth) solid var(--color);
  background: none;
  font-size: 1em;
}