*, html {
  box-sizing: border-box;
}

body {
  padding: 2em;
}

#tree {
  max-width: 300px;
  display: block;
  margin: 0 auto;
}

.red {
  fill: #aa1231;
  -webkit-animation: 0.6s red-flash ease-in-out infinite;
          animation: 0.6s red-flash ease-in-out infinite;
}
@-webkit-keyframes red-flash {
  40% {
    fill: #ea385c;
  }
  80% {
    fill: #aa1231;
  }
}
@keyframes red-flash {
  40% {
    fill: #ea385c;
  }
  80% {
    fill: #aa1231;
  }
}
.gold-lt {
  fill: #c1881c;
  -webkit-animation: 0.6s gold-lt-flash ease-in-out infinite;
          animation: 0.6s gold-lt-flash ease-in-out infinite;
}
@-webkit-keyframes gold-lt-flash {
  40% {
    fill: #e7b75c;
  }
  80% {
    fill: #c1881c;
  }
}
@keyframes gold-lt-flash {
  40% {
    fill: #e7b75c;
  }
  80% {
    fill: #c1881c;
  }
}
.blue-lt {
  fill: #1f3e64;
  -webkit-animation: 0.6s blue-lt-flash ease-in-out infinite;
          animation: 0.6s blue-lt-flash ease-in-out infinite;
}
@-webkit-keyframes blue-lt-flash {
  40% {
    fill: #386fb1;
  }
  80% {
    fill: #1f3e64;
  }
}
@keyframes blue-lt-flash {
  40% {
    fill: #386fb1;
  }
  80% {
    fill: #1f3e64;
  }
}
.blue-dk {
  fill: #0f1f2f;
  -webkit-animation: 0.6s blue-dk-flash ease-in-out infinite;
          animation: 0.6s blue-dk-flash ease-in-out infinite;
}
@-webkit-keyframes blue-dk-flash {
  40% {
    fill: #28527c;
  }
  80% {
    fill: #0f1f2f;
  }
}
@keyframes blue-dk-flash {
  40% {
    fill: #28527c;
  }
  80% {
    fill: #0f1f2f;
  }
}
.gold-dk {
  fill: #69512a;
  -webkit-animation: 0.6s gold-dk-flash ease-in-out infinite;
          animation: 0.6s gold-dk-flash ease-in-out infinite;
}
@-webkit-keyframes gold-dk-flash {
  40% {
    fill: #b28947;
  }
  80% {
    fill: #69512a;
  }
}
@keyframes gold-dk-flash {
  40% {
    fill: #b28947;
  }
  80% {
    fill: #69512a;
  }
}
.g1 {
  -webkit-animation-delay: 0s;
          animation-delay: 0s;
}

.g2 {
  -webkit-animation-delay: 0.4s;
          animation-delay: 0.4s;
}

.g3 {
  -webkit-animation-delay: 0.8s;
          animation-delay: 0.8s;
}