Overflow: hidden not for circle shape divs?

  

body {
  background-color: white;
}

#Circle {
  -webkit-clip-path: inset(0 0 0 0 round 250px);
  clip-path: inset(0 0 0 0 round 250px);
  
  background-color: #22304D;
  background: linear-gradient(to bottom, #22304D, #5E7B9B);
  width: 500px;
  height: 500px;
  border-radius: 100%;
  margin: 0 auto;
  overflow: hidden;
}

#Circle #cont {
  background-color: transparent;
  width: 500px;
  height: 500px;
  border-radius: 100%;
  margin: 0 auto;
  box-shadow: inset 0 0 100px black;
}

#Circle #cont .top {
  height: 250px;
  position: relative;
  background-color: transparent;
  border-top-left-radius: 900px;
  border-top-right-radius: 900px;
}

.bottom {
  display: inline-block;
  position: relative;
  margin-top: 390px;
  opacity: 0.6;
  filter: blur(2px);
  transform: scaleY(-1);
}

.floor {
  background-color: #1E2D49;
  width: 468px;
  margin-left: 16px;
  position: absolute;
  height: 20px;
  margin-top: 320px;
  z-index: 0;
}

.floor::after {
  content: "";
  background-color: #1E2D49;
  width: 200px;
  height: 50px;
  position: absolute;
  transform: rotateX(45deg);
  margin-top: -30px;
  margin-left: -3px;
  border-radius: 90% 100% 0 0;
}

.floor::before {
  content: "";
  background-color: content:"";
  background-color: #1E2D49;
  width: 200px;
  height: 50px;
  position: absolute;
  transform: rotateX(45deg);
  border-radius: 90% 100% 0 0;
  ;
  width: 347px;
  height: 70px;
  position: absolute;
  transform: rotateX(45deg);
  margin-left: 122px;
  margin-top: -50px;
  border-radius: 100% 100% 0 0;
}

.sky {}

.moon {
  background-color: white;
  width: 48px;
  height: 48px;
  z-index: 2;
  border-radius: 100%;
  position: absolute;
  margin-left: 130px;
  margin-top: 180px;
  box-shadow: 0 0 5px white, 0 0 10px #1E2D49, 0 0 90px white;
}

.stars {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.stars {
  background: url(http://www.script-tutorials.com/demos/360/images/stars.png) repeat top center;
  z-index: 0;
}

.mill {
  background-color: #1E2D49;
  width: 50px;
  height: 140px;
  transform: perspective(12px) rotateX(3deg);
  position: absolute;
  z-index: 3;
  margin-top: 150px;
  margin-left: 330px;
}

.mill::before {
  content: "";
  background-color: #FDC500;
  width: 20px;
  height: 20px;
  position: absolute;
  margin-left: 15px;
  margin-top: 35px;
}

.mill::after {
  content: "";
  background-color: #FDC500;
  width: 20px;
  height: 25px;
  position: absolute;
  margin-left: 15px;
  margin-top: 70px;
}

.dome {
  background-color: #1E2D49;
  width: 35px;
  height: 35px;
  position: absolute;
  transform-origin: 0 100%;
  transform: rotate(45deg);
  overflow: hidden;
  margin-left: 330px;
  margin-top: 125px;
  z-index: 4;
}

.fan {
  background-color: #37475E;
  /*37475E */
  width: 10px;
  height: 10px;
  border-radius: 100%;
  position: absolute;
  margin-top: 155px;
  margin-left: 350px;
  z-index: 7;
  animation-name: rotate_fan;
  animation-duration: 6s;
  animation-iteration-count: infinite;
}

.fan_blade1,
.fan_blade2,
.fan_blade3,
.fan_blade4 {
  background-color: #37475E;
  width: 4px;
  height: 60px;
  position: absolute;
  z-index: 6;
  margin-left: 35px;
  margin-top: -28px;
  border-left: 1.5px solid black;
  border-top: 1px solid black;
  transform: rotate(90deg);
}

.fan_blade2 {
  transform: rotate(180deg);
  margin-left: 1px;
  margin-top: 5px;
}

.fan_blade3 {
  transform: rotate(360deg);
  margin-left: 3px;
  margin-top: -60px;
}

.fan_blade4 {
  transform: rotate(270deg);
  margin-top: -28px;
  margin-left: -30px;
}

.fan_blade1::before,
.fan_blade2::before,
.fan_blade3::before,
.fan_blade4::before {
  content: "";
  background-color: transparent;
  width: 20px;
  height: 45px;
  margin-left: 5px;
  background-size: 10px 11px;
  background-image: linear-gradient(to left, gray 2px, transparent 1px), linear-gradient(to bottom, gray 2px, transparent 1px), linear-gradient(to top, gray 1px, transparent 0px);
  position: absolute;
}

@keyframes rotate_fan {
  from {}
  to {
    transform: rotate(360deg);
  }
}
      

        
        
        
      

    

<div id="Circle">
  <div id="cont">
    <div class="top">
      <div class="dome"></div>
      <div class="fan">
        <div class="fan_blade1"></div>
        <div class="fan_blade2"></div>
        <div class="fan_blade3"></div>
        <div class="fan_blade4"></div>
      </div>
      <div class="mill"></div>
      <div class="sky">
        <div class="stars"></div>
        <div class="moon"></div>
      </div>
      <div class="floor">
      </div>
    </div>
    <div class="bottom">
      <div class="dome"></div>
      <div class="fan">
        <div class="fan_blade1"></div>
        <div class="fan_blade2"></div>
        <div class="fan_blade3"></div>
        <div class="fan_blade4"></div>
      </div>
      <div class="mill"></div>
      <div class="sky">
        <div class="stars"></div>
        <div class="moon"></div>
      </div>
      <div class="floor">
      </div>
    </div>
  </div>

</div>