<div class="container">
  <div class="potion-top">
    <div class="potion-top-line"></div>
  </div>
  <div class="potion-neck"></div>
  <div class="potion-body">
    <div class="potion-content">
      <div class="blob-container">
        <div class="blob-one"></div>
        <div class="blob-two"></div>
        <div class="blob-three"></div>
      </div>
    </div>
  </div>
</div>
$bg-color: #2b2b2b;

@mixin circle($h, $w) {
  height: $h;
  width: $w;
  border-radius: 50%;
}

@mixin hole($b: $bg-color) {
  position: absolute;
  transform: translateX(-50%);
  background-color: $b;
}

@mixin blob($t, $l) {
  position: absolute;
  top: $t;
  left: $l;
  @include circle(20px, 20px);
  background-color: #FFF;
  &::after {
    content: '';
    @include circle(10px, 10px);
    @include hole();
    width: 16px;
    height: 16px;
    left: 10px;
    top: 2px;
  }
}
body {
  background-color: $bg-color;
  .container {
    width: 250px;
    height: 250px;
    margin: auto;
    position: relative;
    display: flex;
    justify-content: center;
    top: 100px;
    transform: rotate(30deg);
    .potion-top {
      width: 35px;
      height: 55px;
      position: absolute;
      top: -53px;
      border-radius: 5px;
      border: 5px solid #FFF;
      border-bottom-color: $bg-color;
      background-color: $bg-color;
      z-index: 3;
      .potion-top-line {
        position: absolute;
        width: 10px;
        top: 8px;
        height: 3px;
        right: 2px;
        background-color: #FFF;
      }
    }
    .potion-neck {
      width: 70px;
      height: 20px;
      position: absolute;
      z-index: 4;
      top: -30px;
      border-radius: 5px;
      border: 5px solid #FFF;
      background-color: $bg-color;
    }
    .potion-body {
      $h: 200px;
      $w: 200px;
      @include circle($h, $w);
      border: 8px solid #FFF;
      position: relative;
      z-index: 2;
      .potion-content {
        $h: 180px;
        $w: 180px;
        @include circle($h, $w);
        background-color: $bg-color;
        position: relative;
        z-index: 2;
        top: 10px;
        left: 9px;
        overflow: hidden;
        &::after {
          $border-width: 10px;
          content: "";
          position: absolute;
          border-radius: .5em .5em 5.563em 5.563em;
          width: 270px;
          height: 250px;
          bottom: -130px;
          left: -30px;
          background-color: #36D8C5;
          border-radius: 40%;
          animation: drift 3000ms infinite cubic-bezier(0.5, 0.7, 0.7, 0.5);
        }
        .blob-container {
          width: 80px;
          height: 80px;
          position: absolute;
          top: 40%;
          z-index: 4;
          left: 10%;
          .blob-one {
            @include blob(20px, 25px);
          }
          .blob-two {
            @include blob(30px, 0px);
          }
          .blob-three {
            @include blob(50px, 20px);
          }
        }
      }
    }
  }
}

@keyframes drift {
  from { transform: rotate(0deg); }
  from { transform: rotate(360deg); }
}
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