Button: Charles Blue On Red

<div class="b b--r">
    <div class="m-v400 m-h200">
        <button class="btn btn--c btn--w-hov">Next</button>
    </div>
    <div class="m-v400 m-h200">
        <button class="btn btn--c btn--w-hov" disabled>Next</button>
    </div>
    <div class="m-v400 m-h200">
        <a class="btn btn--c btn--w-hov">Next</a>
    </div>
    <div class="m-v400 m-h200">
        <a class="btn btn--c btn--w-hov btn--sm btn--100">Next</a>
    </div>
</div>