.mpb-button { display: block; margin: 20px 0; padding: 10px; border: none; cursor: pointer; }
.mpb-progress-container { position: relative; width: 100%; height: 20px; background: #eee; margin-top: 5px; }
.mpb-progress-fill { height: 100%; width: 0; background: green; }
.mpb-progress-counter { position: absolute; top: 0; left: 50%; transform: translateX(-50%); font-weight: bold; }

.mpb-button { width: 100%; box-sizing: border-box; }