<form>
  <fieldset>
    <label for="firstname">First name</label>
    <input id="firstname" type="text" />
    
    <label for="lastname">Last Name</label>
    <input id="lastname" type="text" />
    
    <label for="dob">Date of birth</label>
    <input id="dob" type="date" />
  </fieldset>
  
  <button type="submit">Submit</button>
</form>
@use postcss-preset-env{
  stage: 0;
}

form {
  padding: 2rem;
  max-width: 600px;
  
  display: grid;
  grid-template-columns: auto 1fr;
  grid-gap: 1rem;
  align-items: baseline;
}

fieldset {
  display: contents;
}

label {
  text-align: right;
}

button {
  height: 2rem;
  
  grid-column: 1 / -1;
}

@media (max-width: 500px) {
  form {
    grid-template-columns: 1fr;
  }
  
  label {
    text-align: left;
    margin-bottom: -0.75rem;
  }
}
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