.main-wrapper {
  font-size: 15vmin;
  background-color: #ffffff;
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.signboard-wrapper {
  width: 90vmin;
  height: 55vmin;
  margin: 20px;
  position: relative;
  flex-shrink: 0;
  transform-origin: center 2.5vmin;
  animation: 1000ms init forwards, 1000ms init-sign-move ease-out 1000ms, 3000ms sign-move 2000ms infinite;
}
.signboard-wrapper .signboard {
  color: #ffffff;
  font-family: "Open Sans", sans-serif;
  font-weight: bold;
  background-color: #ff5625;
  width: 100%;
  height: 35vmin;
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  bottom: 0;
  border-radius: 4vmin;
  text-shadow: 0 -0.015em #be2b00;
  box-shadow: 0 2vmin 4vmin 1vmin rgba(107, 107, 107, 0.8);
}
.signboard-wrapper .string {
  width: 30vmin;
  height: 30vmin;
  border: solid 0.9vmin #893d00;
  border-bottom: none;
  border-right: none;
  position: absolute;
  left: 50%;
  transform-origin: top left;
  transform: rotate(45deg);
}
.signboard-wrapper .pin {
  width: 5vmin;
  height: 5vmin;
  position: absolute;
  border-radius: 50%;
}
.signboard-wrapper .pin.pin1 {
  background-color: #9f9f9f;
  top: 0;
  left: calc(50% - 2.5vmin);
}
.signboard-wrapper .pin.pin2, .signboard-wrapper .pin.pin3 {
  background-color: #d83000;
  top: 21.5vmin;
}
.signboard-wrapper .pin.pin2 {
  left: 13vmin;
}
.signboard-wrapper .pin.pin3 {
  right: 13vmin;
}

@keyframes init {
  0% {
    transform: scale(0);
  }
  40% {
    transform: scale(1.1);
  }
  60% {
    transform: scale(0.9);
  }
  80% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}
@keyframes init-sign-move {
  100% {
    transform: rotate(3deg);
  }
}
@keyframes sign-move {
  0% {
    transform: rotate(3deg);
  }
  50% {
    transform: rotate(-3deg);
  }
  100% {
    transform: rotate(3deg);
  }
}