snack-bar {
  display: block;
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 0;
  overflow: visible;
}

.snackbar {
  position: fixed;
  display: flex;
  box-sizing: border-box;
  left: 50%;
  bottom: 24px;
  width: 344px;
  margin-left: -172px;
  background: #2a2a2a;
  border-radius: 2px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.5);
  transform-origin: center;
  color: #eee;
  z-index: 100;
  cursor: default;
  will-change: transform;
  animation: snackbar-show 300ms ease forwards 1;
}
.snackbar[aria-hidden="true"] {
  animation: snackbar-hide 300ms ease forwards 1;
}
@keyframes snackbar-show {
  from {
    opacity: 0;
    transform: scale(0.5);
  }
}
@keyframes snackbar-hide {
  to {
    opacity: 0;
    transform: translateY(100%);
  }
}

@media (max-width: 400px) {
  .snackbar {
    width: 100%;
    bottom: 0;
    left: 0;
    margin-left: 0;
    border-radius: 0;
  }
}

.text {
  flex: 1 1 auto;
  padding: 16px;
  font-size: 100%;
}

.button {
  position: relative;
  flex: 0 1 auto;
  padding: 8px;
  height: 36px;
  margin: auto 8px auto -8px;
  min-width: 5em;
  background: none;
  border: none;
  border-radius: 3px;
  color: lightgreen;
  font-weight: inherit;
  letter-spacing: 0.05em;
  font-size: 100%;
  text-transform: uppercase;
  text-align: center;
  cursor: pointer;
  overflow: hidden;
  transition: background-color 200ms ease;
  outline: none;
}
.button:hover {
  background-color: rgba(0,0,0,0.15);
}
.button:focus:before {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  width: 120%;
  height: 0;
  padding: 0 0 120%;
  margin: -60% 0 0 -60%;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  transform-origin: center;
  will-change: transform;
  animation: focus-ring 300ms ease-out forwards 1;
  pointer-events: none;
}
@keyframes focus-ring {
  from {
    transform: scale(0.01);
  }
}
