wekan/client/components/main/spinner_dot.css

.sk-spinner-dot {
  margin: 100px auto;
  width: 40px;
  height: 40px;
  position: relative;
  text-align: center;
  -webkit-animation: sk-rotate 2s infinite linear;
  animation: sk-rotate 2s infinite linear;
}
.sk-dot1,
.sk-dot2 {
  width: 40%;
  height: 40%;
  display: inline-block;
  position: absolute;
  top: 0;
  background-color: #333;
  border-radius: 100%;
  -webkit-animation: sk-bounce 2s infinite ease-in-out;
  animation: sk-bounce 2s infinite ease-in-out;
}
.sk-dot2 {
  top: auto;
  bottom: 0;
  -webkit-animation-delay: -1s;
  animation-delay: -1s;
}
@-webkit-keyframes sk-rotate {
  100% {
    -webkit-transform: rotate(360deg);
  }
}
@-webkit-keyframes sk-bounce {
  0%, 100% {
    -webkit-transform: scale(0);
  }
  50% {
    -webkit-transform: scale(1);
  }
}
@-moz-keyframes sk-rotate {
  100% {
    transform: rotate(360deg);
    -webkit-transform: rotate(360deg);
  }
}
@-webkit-keyframes sk-rotate {
  100% {
    transform: rotate(360deg);
    -webkit-transform: rotate(360deg);
  }
}
@-o-keyframes sk-rotate {
  100% {
    transform: rotate(360deg);
    -webkit-transform: rotate(360deg);
  }
}
@keyframes sk-rotate {
  100% {
    transform: rotate(360deg);
    -webkit-transform: rotate(360deg);
  }
}
@-moz-keyframes sk-bounce {
  0%, 100% {
    transform: scale(0);
    -webkit-transform: scale(0);
  }
  50% {
    transform: scale(1);
    -webkit-transform: scale(1);
  }
}
@-webkit-keyframes sk-bounce {
  0%, 100% {
    transform: scale(0);
    -webkit-transform: scale(0);
  }
  50% {
    transform: scale(1);
    -webkit-transform: scale(1);
  }
}
@-o-keyframes sk-bounce {
  0%, 100% {
    transform: scale(0);
    -webkit-transform: scale(0);
  }
  50% {
    transform: scale(1);
    -webkit-transform: scale(1);
  }
}
@keyframes sk-bounce {
  0%, 100% {
    transform: scale(0);
    -webkit-transform: scale(0);
  }
  50% {
    transform: scale(1);
    -webkit-transform: scale(1);
  }
}