JSFiddle - React, Tailwind, and code Playground

HTML

<form action="Reihenfolge.php" method="post" enctype="text/plain">
  <div class="l">
    <fieldset>
      <legend>Dial H</legend>
      <label for="dialh">Ja</label>
      <input type="radio" name="dialh" value="1" />
      <label for="dialh">Nein</label>
      <input type="radio" name="dialh" value="0" checked/>
    </fieldset>
  </div>
  <div class="r">
    <fieldset>
      <legend>I, Vampire</legend>
      <label for="vampire">Ja</label>
      <input type="radio" name="vampire" value="1" />
      <label for="vampire">Nein</label>
      <input type="radio" name="vampire" value="0" checked/>
    </fieldset></div>
  <div class="c">
    <fieldset>
      <legend>Demon Knights</legend>
      <label for="demonknights">Ja</label>
      <input type="radio" name="demonknights" value="1" />
      <label for="demonknights">Nein</label>
      <input type="radio" name="demonknights" value="0" checked/>
    </fieldset>
  </div>  
  <br>
  <input type="submit" value="OK!" />
  <input type="reset" value="Reset" />
  <br />
</form>

CSS

.l {float: left; width: 30%;}
.c {margin: auto; width: 30%;}
.r {float: right; width: 30%;}