.anmeldung {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px 16px;
}
.karte {
  width: 100%;
  max-width: 420px;
  padding: 32px 28px 28px;
  box-shadow: var(--schatten);
}
.marke { display: flex; gap: 14px; align-items: center; margin-bottom: 26px; }
.marke h1 { font-size: 26px; }
.marke p { margin: 2px 0 0; }
form .feld { margin-bottom: 16px; }
#meldung { min-height: 22px; margin: 0 0 12px; }
.breit { width: 100%; min-height: 48px; font-size: 16px; }