*, *:before, *:after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

svg {
  position: absolute;
}

.demo {
  width: 100vw;
  height: 100vh;
  background: linear-gradient(45deg, #5FC12A, #2B6809);
}
.demo__buttons {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-150px, -150px);
  filter: url("#goo");
}
.demo__buttons.step-0 .demo__social-btn-1, .demo__buttons.step-0 .demo__social-btn-2, .demo__buttons.step-0 .demo__social-btn-3, .demo__buttons.step-0 .demo__social-btn-4 {
  transform: translate3d(-160px, -160px, 0);
}
.demo__buttons.step-1 .demo__social-btn-1 {
  transform: translate3d(-160px, -160px, 0);
}
.demo__buttons.step-1 .demo__social-btn-2, .demo__buttons.step-1 .demo__social-btn-3, .demo__buttons.step-1 .demo__social-btn-4 {
  transform: translate3d(-160px, 160px, 0);
}
.demo__buttons.step-2 .demo__social-btn-1 {
  transform: translate3d(-160px, -160px, 0);
}
.demo__buttons.step-2 .demo__social-btn-2 {
  transform: translate3d(-160px, 160px, 0);
}
.demo__buttons.step-2 .demo__social-btn-3, .demo__buttons.step-2 .demo__social-btn-4 {
  transform: translate3d(160px, 160px, 0);
}
.demo__buttons.step-3 .demo__social-btn-1 {
  transform: translate3d(-160px, -160px, 0);
}
.demo__buttons.step-3 .demo__social-btn-2 {
  transform: translate3d(-160px, 160px, 0);
}
.demo__buttons.step-3 .demo__social-btn-3 {
  transform: translate3d(160px, 160px, 0);
}
.demo__buttons.step-3 .demo__social-btn-4 {
  transform: translate3d(160px, -160px, 0);
}
.demo__social-btn {
  position: absolute;
  left: 0px;
  top: 0px;
  width: 280px;
  height: 280px;
  text-align: center;
  line-height: 280px;
  font-size: 120px;
  background: white;
  color: #612612;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.2s ease;
}
.demo__social-btn:hover {
  color: #310b01;
  box-shadow: 0 0 15px white;
}
.demo__open-btn {
  position: absolute;
  left: 0px;
  top: 0px;
  width: 280px;
  height: 280px;
  text-align: center;
  line-height: 280px;
  font-size: 120px;
  font-family: sans-serif;
  background: white;
  color: #612612;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.2s ease;
}
.demo__open-btn:hover {
  color: #310b01;
  box-shadow: 0 0 15px white;
}

a {
    color: #612612;
}