body {
  background: #4285f4;
  color: #fff;
  font-family: "Open Sans", sans-serif;
  padding: 30px;
  text-align: center;
}

.checkbox {
  position: absolute;
  visibility: hidden;
  
  &__label {
    cursor: pointer;
    display: inline-block;
    position: relative;
    text-align: center;
    width: 50px;
  }
  
}

.pin {
  background: #5892fc;
  border-radius: 100%;
  box-shadow: 
    0 1px 3px rgba(#000, 0.1),
    0 5px 5px rgba(#000, 0.1);
  display: block;
  height: 25px;
  position: absolute;
  left: -4px;
  top: -4px;
  transition:
    background 0.25s,
    left 0.25s,
    box-shadow 0.25s;
  width: 25px;
  
  .checkbox__label:hover & {
    box-shadow: 
      0 1px 3px rgba(#000, 0.1),
      0 5px 5px rgba(#000, 0.1),
      0 10px 15px rgba(#000, 0.2);
  }
  
  &__track {
    background: #3262ba;
    border-radius: 9px;
    content: ' ';
    display: block;
    height: 17px;
    transition: background 0.25s;
    width: 100%;
    
    .checkbox:checked + & {
      background: #d9e7ff;
      
      .pin {
        background: #fafafa;
        left: 29px;
        
        &__component {
          
          &__wrapper {
            left: 52%;
            transform:
              translateX(-50%)
              translateY(-50%)
              rotate(0deg);
          }
          
          &--top {
            background: #377df9;
            
            &:before {
              border-bottom: 2px solid #377df9;
            }
            
            &:after {
              border-top: 2px solid #377df9;
            }
            
          }
          
          &--bottom {
            border-top: 6px solid #377df9;
          }
          
        }
        
      }
      
    }
    
  }
  
  &__component {
    transition:
      background 0.25s,
      border 0.25s;
    
    &__wrapper {
      left: 50%;
      position: absolute;
      top: 50%;
      transition: transform 0.25s;
      transform:
        translateX(-50%)
        translateY(-50%)
        rotate(45deg);
    }
    
    &--top {
      background: #fff;
      display: block;
      height: 4px;
      position: relative;
      width: 6px;
      
      &:before,
      &:after {
        content: ' ';
        display: block;
        position: absolute;
        transition: border 0.25s;
        width: 100%
      }
      
      &:before {
        border-bottom: 2px solid #fff;
        border-left: 2px solid transparent;
        border-right: 2px solid transparent;
        border-top: none;
        bottom: -2px;
        left: -2px;
      }
      
      &:after {
        border-bottom: none;
        border-left: 1px solid transparent;
        border-right: 1px solid transparent;
        border-top: 2px solid #fff;
        left: -1px;
        top: -2px;
        width: 100%;
      }
      
    }
    
    &--bottom {
      border-bottom: none;
      border-left: 1px solid transparent;
      border-right: 1px solid transparent;
      border-top: 6px solid #fff;
      box-sizing: border-box;
      display: block;
      left: 50%;
      position: relative;
      top: 2px;
      transform: translateX(-50%);
      height: 0;
      width: 0;
    }
    
  }
  
}