<div class="grid">
    <div class="toggleButton">
        <input type="radio"
               class="toggleButton__input"
               id="input3"
               name="looptijd1"
               value="maand"
      `         checked>
        <label class="toggleButton__label" for="input3" tabindex="-1">1 maand</label>
    </div>
    <div class="toggleButton">
        <input type="radio" class="toggleButton__input" id="input4" name="looptijd1" value="jaar">
        <label class="toggleButton__label" for="input4" tabindex="-1">1 jaar</label>
    </div>
</div>