.kontakt-box {
  max-width: 600px;
  margin: 2rem auto;
  background: #000;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 8px 16px rgba(0, 0, 255, 0.4);
  color: #fff;
}

.kontakt-box label {
  display: block;
  margin-bottom: 1rem;
  font-weight: bold;
}

.kontakt-box input,
.kontakt-box textarea {
  width: 100%;
  padding: 0.6rem;
  border: 1px solid #444;
  border-radius: 6px;
  background: #111;
  color: #fff;
  font-size: 16px;
}

.kontakt-box textarea {
  resize: vertical;
}