JSFiddle - React, Tailwind, and code Playground

HTML

<form>
    
    <input name="test[]" type="checkbox" required />
    <input name="test[]" type="checkbox" required  />
    <input name="test[]" type="checkbox" required />
    <input type="submit" value="Submit"  required />
</form>


<form>
    
    <input name="test[]" required />
    <input name="test[]" />
    <input name="test[]" />
    <input type="submit" value="Submit" />
</form>