Fullscreen background image scale animation

fullscreen-animation.scss

.fullscreenBgContainer{
    z-index: 1;
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    top: 0;
    background: {
      repeat: no-repeat;
      position: center center;
      size: cover;
    }
    -webkit-transition: all 750ms ease-out;
    transition: all 750ms ease-out;
    //remove this class when image is loaded
    &.scaled {
      -webkit-transform: scale(1.02);
    }
  }