bitwarden-estensione-browser/apps/browser/src/content/autofill.css

@-webkit-keyframes bitwardenfill {
  0% {
    -webkit-transform: scale(1, 1);
  }

  50% {
    -webkit-transform: scale(1.2, 1.2);
  }

  100% {
    -webkit-transform: scale(1, 1);
  }
}

@-moz-keyframes bitwardenfill {
  0% {
    transform: scale(1, 1);
  }

  50% {
    transform: scale(1.2, 1.2);
  }

  100% {
    transform: scale(1, 1);
  }
}

span[data-bwautofill].com-bitwarden-browser-animated-fill {
  display: inline-block;
}

.com-bitwarden-browser-animated-fill {
  animation: bitwardenfill 200ms ease-in-out 0ms 1;
  -webkit-animation: bitwardenfill 200ms ease-in-out 0ms 1;
}