body {
  margin: 0;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: hsl(0, 0%, 100%);
}

.btn {
  margin-top: -80vh;
  padding: 10px;
  width: 10vw;
  margin-left: -5vw;
  font-size: large;
  color: #eee;
  background-color: #2229f3;
  border: none;
  border-radius: 5px;
  width: 5vw;
  cursor: pointer;
}

.control-btns
{
  display: flex;
  flex-direction: column;
  gap: 2vh;
}
.speedControlBtn
{
 color: #eee;
  background-color: #2229f3;
  border: none;
  border-radius: 5px;
  width: 7vw;
  height: 5vh;
  cursor: pointer;
}
.container {
  width: 750px;
  height: 700px;
  background: #111;
  position: relative;
  border-radius: 100%;
  margin-left: 5vw;
}

.orbit {
  position: absolute;
  border: 2px solid white;
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: rotate 8s linear infinite;
}

.orbit.small {
  width: 310px;
  height: 180px;
  animation-duration: 6s;
}

.orbit.medium {
  width: 450px;
  height: 370px;
  animation-duration: 8s;
}

.orbit.large {
  width: 650px;
  height: 550px;
  animation-duration: 10s;
}

.planet {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  position: absolute;
  cursor: pointer;
  top: -25px;
  left: 50%;
  transform: translateX(-50%);
}

.blue {
  background: #4da6ff;
}
.pink {
  background: #ff6f91;
}
.green {
  background: #4cd137;
}
.yellow {
  background: #fbc531;
  width: 100px;
  height: 100px;
  top: 50%;
  left: 50%;
  border-radius: 100%;
  transform: translate(-50%, -50%);
  position: absolute;
}

@keyframes rotate {
  from {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}