@-moz-keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(em(-10px));
  }
  20%, 40%, 60%, 80% {
    transform: translateX(em(10px));
  }
}
@-webkit-keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(em(-10px));
  }
  20%, 40%, 60%, 80% {
    transform: translateX(em(10px));
  }
}
@-o-keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(em(-10px));
  }
  20%, 40%, 60%, 80% {
    transform: translateX(em(10px));
  }
}
@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(em(-10px));
  }
  20%, 40%, 60%, 80% {
    transform: translateX(em(10px));
  }
}