.dots::after {
    content: '';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
    0% { content: ''; }
    25% { content: '.'; }
    50% { content: '..'; }
    75% { content: '...'; }
    100% { content: ''; }
}
.progress {
    width: 100%;
    height: 10px;
    background: #eee;
    border-radius: 5px;
    overflow: hidden;
}
.progress-bar {
    height: 10px;
    background: #4caf50;
    width: 0;
}

.disabled {
  pointer-events: none;
  opacity: 0.5 !important;
  user-select: none;
}