.btn.loading{display:flex;align-items:center;justify-content:center}.btn.loading::before{content:"";display:inline-block;margin-right:.5rem;width:1rem;height:1rem;border:2px solid currentColor;border-radius:50%;border-top-color:transparent;animation:spinner .75s linear infinite}@keyframes spinner{to{transform:rotate(360deg)}}