body {
  font-family: 'Noto Sans TC', sans-serif,"Source Sans Pro",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";
}
.flash {
  color:#218838;
  animation-name: flash;
  animation-duration: 2s;
  -webkit-animation-fill-mode: forwards;
}

@keyframes flash {
  0% {opacity:1;}
  50% {opacity:1;}
  100% {opacity:0;}
}

.btn.btn-sure{
  border-color: #182548;
  background-color: #182548;
  color: #FFF;
}