@keyframes #{$rt-namespace}__trackProgress { 0% { transform: scaleX(1); } 100% { transform: scaleX(0); } } .#{$rt-namespace}__progress-bar { position: absolute; bottom: 0; left: 0; width: 100%; height: 5px; z-index: var(--toastify-z-index); opacity: 0.7; transform-origin: left; &--animated { animation: #{$rt-namespace}__trackProgress linear 1 forwards; } &--controlled { transition: transform 0.2s; } &--rtl { right: 0; left: initial; transform-origin: right; } }