@keyframes shake {
  0%  { transform: translateX(-2rem); }
  25% { transform: translateX(2rem); }
  50% { transform: translateX(-1rem); }
  75% { transform: translateX(1rem); }
}

@keyframes submitting {
  0%    { -webkit-mask-position: 0% 0%,   50% 0%,   100% 0% }
  12.5% { -webkit-mask-position: 0% 50%,  50% 0%,   100% 0% }
  25%   { -webkit-mask-position: 0% 100%, 50% 50%,  100% 0% }
  37.5% { -webkit-mask-position: 0% 100%, 50% 100%, 100% 50% }
  50%   { -webkit-mask-position: 0% 100%, 50% 100%, 100% 100% }
  62.5% { -webkit-mask-position: 0% 50%,  50% 100%, 100% 100% }
  75%   { -webkit-mask-position: 0% 0%,   50% 50%,  100% 100% }
  87.5% { -webkit-mask-position: 0% 0%,   50% 0%,   100% 50% }
  100%  { -webkit-mask-position: 0% 0%,   50% 0%,   100% 0% }
}

@keyframes success {
  0% { background-color: var(--color-border--heavy); scale: 0.8; }
  20% { background-color: var(--color-border--heavy); scale: 1; }
}

@keyframes zoom-fade {
  100% { transform: translateY(-2em); opacity: 0; }
}

@keyframes appear-then-fade {
  0%,100% { opacity: 0; }
  5%,60%  { opacity: 1; }
}