.kontaktformular * {
  box-sizing: border-box;
  font-family: sans-serif;
}

.kontaktformular {
  max-width: 600px;
  padding: 0 1.5rem;
}

.kontaktformular label {
  display: block;
  padding: 1.2rem 0 0.2rem 0;
  font-weight: 700;
  font-size: 1rem;
  color: #374151;
}

.kontaktformular input, .kontaktformular textarea {
  display: block;
  width: 100%;
  font-size: 1rem;
  padding: 0.7rem;
  background-color: #fff;
  border: 3px solid #D1D5DB;
  outline: none;
  border-radius: 0.5rem;
  color: #000;
  transition: 300ms border;
}

.kontaktformular textarea {
  resize: none;
}

.kontaktformular input:focus, .kontaktformular textarea:focus {
  background-color: #fff;
  border-color: #2563EB;
}

.kontaktformular input:focus:required:invalid, .kontaktformular textarea:focus:required:invalid {
  background-color: #fff;
  border-color: #E74694;
}

.kontaktformular .btns-row {
  margin-top: 1rem;
  text-align: center;
}

.kontaktformular button {
  display: inline-block;
  padding: 0.65rem 1rem;
  border-radius: 0.5rem;
  border-color: transparent;
  background-color: #2563EB;
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  transition: 300ms background;
  cursor: pointer;
}

.kontaktformular button:hover {
  background-color: #3B82F6;
}

.kontaktformular .rot {
  color: #cc0030;
}