.app__background {
  background-image: url("/peter-osmenda-1224249-unsplash.wbc.jpg");
  background-size: cover;
  filter: blur(3px);
  height: 100%;
  width: 100%;
  position: absolute;
  z-index: -1;
  transform: scale(1.1);
}

.app__navigation {
  width: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  padding: 15px;
  position: absolute;
  top: 0;
  z-index: 1;
  & a {
    margin-right: 25px;
    text-decoration: none;
    color: white;
    &:hover,
    &.active {
      text-decoration: underline;
    }
  }
}