@mixin keyframe-rotation() {
  @keyframes rotation {
    from {
      transform: rotate(0deg);
    }
    to {
      transform: rotate(359deg);
    }
  }  
  @keyframes placeHolderShimmer {
    0% {
      background-position: 0vw 0
    }
    25% {
      background-position: 7.5vw 0
    }
    50% {
      background-position: 15vw 0
    }
    75% {
      background-position: 22.5vw 0
    }
    100% {
      background-position: 30vw 0
    }
  }  
  @keyframes color-gradient {
    0% {
      background-position: 0% 50%;
    }
    50% {
      background-position: 100% 50%;
    }
    100% {
      background-position: 0% 50%;
    }
  }
}